Разделы схем — 33 (всего 90)
ACTIVE BODYWORKS AIR CONDITIONING ANTI-LOCK BRAKES ANTI-THEFT BODY CONTROL MODULES COMPUTER DATA LINES COOLING FAN CRUISE CONTROL DEFOGGERS ELECTRONIC POWER STEERING ENGINE PERFORMANCE EXTERIOR LIGHTS GROUND DISTRIBUTION HEADLIGHTS HORN INSTRUMENT CLUSTER INTERIOR LIGHTS MEMORY SYSTEMS NAVIGATION POWER DISTRIBUTION POWER DOOR LOCKS POWER MIRRORS POWER SEATS POWER TOP/SUNROOF POWER WINDOWS RADIO SHIFT INTERLOCK STARTING/CHARGING SUPPLEMENTAL RESTRAINTS TRANSMISSION TRUNK, TAILGATE, FUEL DOOR WARNING SYSTEMS WIPER/WASHER
ACTIVE BODYWORKS Active Bodyworks Wiring Diagram for Cadillac CTS 2008 List of elements for Active Bodyworks Wiring Diagram for Cadillac CTS 2008: 39 (3.6l (vin 7): on front right valve cover) engine control module (ecm) (top right of engine) g132 Batt+ volt Body control module (bcm) Computer data lines system Data bus+ Data bus- Emis 2 fuse 15a Front upper beam pedestrian impact detection sensor G200 (behind left kick panel) Gnd Ground Hi spd gmlan serial data bus+ Hi spd gmlan serial data bus- Hi spd gmlan serial data bus- x3 Hood hi ref Hood lo ref Hot at all times Hot w/ pwr/trn relay energized J201 Left active hood hinge actuator Lo ref Module sig Ped prot fuse 10a Pedestrian impact detection module Pnk Rear upper beam pedestrian impact detection sensor Right active hood hinge actuator Sensor lo ref Sensor sig Serial data Serial data + Serial data - Shorting bar Tan Transmission control module (tcm) (a/t) (at right front of engine compt) Underhood fuse block (right front of engine compt) Vehicle speed sensor (vss) (5 speed m/t: on right rear of transmission) (6 speed m/t: on left rear of transmission) Vss high sig
AIR CONDITIONING Automatic A/C Wiring Diagram (1 of 2) for Cadillac CTS 2008 List of elements for Automatic A/C Wiring Diagram (1 of 2) for Cadillac CTS 2008: 56 (behind left kick panel) g200 (behind right kick panel) g201 (in hvac assembly harness, near driver air temperature actuator) (in hvac assembly harness, near mode actuator) (in i/p harness, near hazard switch connector) 5-volt ref 3 Auto switch Batt pos volt Blower motor (on right side of hvac module) Blower motor control module (on lower left side of blower motor) Blower motor switch Blwr fuse 40a Blwr mtr spd ctrl Blwr mtr sply volt Body control module (bcm) Computer data lines system Defogger system Disply fuse 15a Dr ctrl circuit Dr pos sig Drv sens sig Evaporator temperature sensor (on right side of evaporator case) Gnd Hot at all times Hvac control module (behind center of dash, below radio) Ign 3 volt J201 J202 J225 J230 J265 (in i/p harness, near branch for front center speaker) Left air temperature actuator (on hvac module) Left air temperature switch Lo dr pos sig Lo ref Lo spd gmlan Logic logic Low ref Mode actuator (on left side of hvac module) Mode dr ctrl Mode switch Pass sens sig Power distribution system Rec dr ctrl Rec dr pos sig Recirculation actuator (left side of blower motor) Recirculation switch Right air temp Right air temperature actuator (on hvac module) Right air temperature switch Rly ctrl Sens sig Spd ctrl Tan Temp dr ctrl Underhood fuse block (right front of engine compt) Automatic A/C Wiring Diagram (2 of 2) for Cadillac CTS 2008 List of elements for Automatic A/C Wiring Diagram (2 of 2) for Cadillac CTS 2008: 39 5-volt ref 3 87a A/c cltch fuse 10a A/c cmprsr clutch relay A/c compressor clutch (3.6l (vin 7): lower left front of engine) A/c compressor clutch rly ctrl A/c refrigerant press sens sig A/c refrigerant pressure sensor (near left front strut tower, on a/c refrigerant line) After boil heater rly ctrl After boil relay (3.6l (vin v)) Ambient air temperature sensor (under front bumper, near front grille) Auxiliary coolant pump (3.6l (vin v)) Computer data lines system Drl/ eng pump fuse 10a Ect sens sig Emis 2 fuse 15a Engine control module (ecm) (3.6l (vin 7): on front right valve cover) Engine coolant temperature (ect) sensor (side of left cylinder head) Fan 1 fuse 30a Fan 1 relay Fan 2 fuse 30a Fan 2 relay Fan s/p relay G101 (near left front strut tower) G104 (on right body rail, near right headlight) G132 (top right of engine) Hi spd cooling fan rly ctrl Hi spd gmlan serial data bus+ Hot at all times Hot w/ pwr/ trn relay energized Inside air temperature sensor (behind dash, left of radio) Jx201 (in body harness, near left front inflatable restraint side impact sensor) Left engine cooling fan (left side of radiator) Lo ref Lo spd cooling fan rly ctrl Right engine cooling fan (right side of radiator) Sunload sensor (top center of i/p, on defrost grill) Tan Underhood fuse block (right front of engine compt) Compressor Wiring Diagram for Cadillac CTS 2008 List of elements for Compressor Wiring Diagram for Cadillac CTS 2008: 17 5-volt ref 3 A/c cltch fuse 10a A/c cmprsr clutch relay A/c compressor clutch (3.6l (vin 7): lower left front of engine) A/c refrigerant press sens sig A/c refrigerant pressure sens sig A/c refrigerant pressure sensor (near left front strut tower, on a/c refrigerant line) Computer data lines system Emis 2 fuse 15a Engine control module (ecm) (3.6l (vin 7): on front right valve cover) G132 (top right of engine) Hi spd gmlan serial data bus+ Hot at all times Hot w/ pwr/ trn relay energized Lo ref Tan Underhood fuse block (right front of engine compt)
ANTI-LOCK BRAKES Anti-lock Brakes Wiring Diagram for Cadillac CTS 2008 List of elements for Anti-lock Brakes Wiring Diagram for Cadillac CTS 2008: 58 (on inside of left rear wheel) left rear wheel speed sensor (wss) 12v ref 12v ref volt 5v ref volt Abs fuse 30a Abs ind Abs mtr fuse 50a Battery positive voltage Body control module (bcm) Can bus high Can bus high serial data Can bus low Can bus low serial data Computer data lines system Disply fuse 10a Driver information center (dic) Electronic brake control module (ebcm) (at right front corner of engine compt) G110 (on right frame rail, near abs module) G200 (behind left kick panel) G201 (behind right kick panel) G402 (at left rear shock tower) Gmlan serial data bus+ Gmlan serial data bus- Gnd High speed Hot at all times Instrument panel cluster (ipc) J201 J205 J240 Left front wheel speed sensor (wss) (on back of left front wheel) Lh frt wheel spd sens low ref Lh frt wheel spd sens sig Lh rr wheel spd sens low ref Lh rr wheel spd sens sig Logic Low spd gmlan serial data Nca Radio Radio/ hvac control Red Rh frt wheel spd sens low ref Rh frt wheel spd sens sig Rh rr wheel spd sens low ref Rh rr wheel spd sens sig Right front wheel speed sensor (wss) (on back of right front wheel) Right rear wheel speed sensor (wss) (on inside of right rear wheel) Serial data communication enable Steering wheel position sensor (near middle of steering column) Tan Traction control switch Traction ctrl sw sig x2 Underhood fuse block (right front of engine compt) Variable effort steering actr ctrl Variable effort steering actr sply volt Variable effort steering actuator (on power steering rack assembly) Vehicle speed signal Yaw & lateral accelerometer sensor (under center console)
ANTI-THEFT Forced Entry Wiring Diagram (1 of 2) for Cadillac CTS 2008 List of elements for Forced Entry Wiring Diagram (1 of 2) for Cadillac CTS 2008: 64 (in driver door handle switch) 12-v ref Antenna clock Antenna data Antenna low Antenna sig Antenna sply Body control module (bcm) Center console active keyless entry antenna (w/ remote start) Center console passive keyless entry antenna (under floor console) Computer data lines system Data bus+ Display fuse 10a Driver information center (dic) Drv door unlck Drv sw sig Exterior lights system G102 (right front of engine compt) G200 (behind left kick panel) G201 (behind right kick panel) G401 (at right rear shock tower) Gnd Hood ajar sw Hood ajar switch Hood sw sig Horn rly ctrl Horns system Hot at all times Ignition sw sig Instrument panel cluster (ipc) J201 J390 (in body harness, near inline connector x700) J394 (in body harness, near branch to inflatable restraint sensing & diagnostic module) J396 (in body harness, near branch to inflatable restraint sensing & diagnostic module) J430 J710 J810 Left front door handle keyless entry antenna (w/ remote start) Left rear door latch (at rear of left rear door) Liftgate ajar sw Logic Lr door ajar sw Lr door open sw Nca Park lp sply Pass sw sig Pnk Rear compartment keyless entry antenna Rear compartment lid latch Release ctrl Remote control door lock receiver (rcdlr) Right front door handle keyless entry antenna (w/ remote start) (in passenger door handle switch) Right rear door latch (at rear of right rear door) Rke/pass key/mdl fuse 10a Rr door ajar sw Security ind Serial data Shift interlock system Shift pos sig Starting/ charging system Tan Trunk, tailgate, fuel doors system Trunk/tailgate, fuel doors system Underhood fuse block (right front of engine compt) Forced Entry Wiring Diagram (2 of 2) for Cadillac CTS 2008 List of elements for Forced Entry Wiring Diagram (2 of 2) for Cadillac CTS 2008: 48 (at rear of driver door) driver door latch (at right rear shock tower) g401 (behind right kick panel) g201 (w/ deluxe interior lamp package) j605 87a Backlight lp Computer data lines system Courtesy lp hi Courtesy lp lo Door latch Door lck Dr/lck fuse 15a Driver door handle switch Driver door module (ddm) (on left front door, under door trim panel) Drv door latch Drv door lck Drv door sw Front passenger door module (fpdm) (on right front door, under door trim panel) G200 (behind left kick panel) G201 (behind right kick panel) Gnd Hot at all times Ic 2 ctrl Interior lights system J505 (w/ deluxe interior lamp package) J510 J610 Lck relay Lf door ajar Lf door handle Lf dr sw sig Logic Network 1 Network 2 Passenger door handle switch Passenger door latch (at rear of passenger door) Pdm fuse 15a Pnk Rear fuse block (right rear of luggage compt) Release sig Rf door handle Rf dr sw sig Serial data Tan Trunk, tailgate, fuel doors system Unlck relay W/ remote start W/o remote start Pass-Key Wiring Diagram for Cadillac CTS 2008 List of elements for Pass-Key Wiring Diagram for Cadillac CTS 2008: 27 (w/ remote start) hood ajar switch Acc Body control module (bcm) Computer data lines system Display fuse 10a Driver information center (dic) G102 (right front of engine compt) G200 (behind left kick panel) Gnd Hot at all times Ign Ignition switch Instrument panel cluster (ipc) J201 J205 J260 J270 Lock Logic Low gmlan Pwr moding fuse 2a Run Security ind Start Tan Theft deterrent module (tdm) (w/o remote start) (at top of steering column) Underhood fuse block (right front of engine compt)
BODY CONTROL MODULES Body Control Modules Wiring Diagram (1 of 2) for Cadillac CTS 2008 List of elements for Body Control Modules Wiring Diagram (1 of 2) for Cadillac CTS 2008: 81 (behind left kick panel) g200 12-volt ref 5-volt ref 5-volt ref 1 A/t shift lk ctrl sol ctrl Acc volt Anti-lock brakes system Automatic headlamp rly ctrl Battery positive volt Bcm 1 fuse 10a Bcm 2 fuse 15a Bcm 3 fuse 10a Bcm 4 fuse 10a Bcm 5 fuse 10a Bcm 6 fuse 15a Bcm 7 fuse 10a Body control module (bcm) Computer data lines system Courtesy lamp rly ctrl Courtesy lamps sply volt Courtesy lamps sw on sig Cruise control & sound systems Cruise control system Cruise ctrl ind dimming sig Cruise ctrl sw sig Door locks system Drl ambient light sens sig Drv door unlock rly ctrl Exterior lights system Flash to pass sw sig key capture/column lk shift position sig Front fog lamp sw sig Fuel door release sol ctrl Gnd Hazard sw sig Hdlp dimmer sw hi beam sig Hdlp low beam sply volt Hdlp sw hdlps off sig Headlights system Hi spd gmlan serial data bus+ Hi spd gmlan serial data bus- Hot at all times I/p dimmer sw sig I/p lps dimmer sw sig Ic 2 ctrl Interior lights system J201 Led backlight dimming ctrl Lf turn sig sw sig Lift glass/trunk mtr release ctrl Low ref Low spd gmlan serial data Off/run/crank volt Park lamp sw on sig Pnk Power distribution system Power windows system Pwr win master sw lkout rr sig Pwr wind master sw lkout sig Pwr wind master sw lr dn sig Pwr wind master sw lr up sig Pwr wind master sw rr dn sig Pwr wind master sw rr up sig Remote radio ctrl sply volt Rf turn sig sw sig Rh tail lp outage detection sig Serial data communication enable Shift interlock system Sound systems Steering wheel controls sig Stop lamp sw sig Tan Tap up/tap down sw sig Traction control sw sig Transmissions system Trunk, tailgate, fuel doors system Trunk, tailgate, fuel doors systems Underhood underhood fuse block fuse block (right front (right front of engine of engine compt) compt) Windshield washer sw sig Windshield wiper sw high sig Windshield wiper sw low sig Wiper/washer system Body Control Modules Wiring Diagram (2 of 2) for Cadillac CTS 2008 List of elements for Body Control Modules Wiring Diagram (2 of 2) for Cadillac CTS 2008: 63 (behind right kick panel) g201 Acc volt Acc wakeup serial data Air conditioning & wiper/washer systems Anti-theft system Backup lamp sply volt Battery positive volt Body control module (bcm) Chmsl sply volt/stop lamp sply volt Courtesy lamp rly ctrl Cruise control & transmissions systems Current sensor low ref Current sensor sig Current sensor sply volt Door locks system Drl sply volt Exterior lights system Fog lamp rly ctrl Front windshield wiper sw hi sig Gnd Hdlp rly ctrl Hdlp washer rly ctrl Headlamp relay control Headlights system Hood ajar sw sig Hood closed sw sig Horn rly ctrl Horns system Hot at all times I/p dimmer sw sig Ign 1 volt Ign 3 volt Instrument cluster system Interior lights system Left tail lamp outage detection sig Lf turn signal lamp sply volt Liftgate ajar sw sig Local interconnect network 3 Lr door ajar sw sig Lr door open sw sig Lr stop/turn lamp sply volt Mirrors system Park brake sw sig Park lamp rly ctrl Park lamp sply volt Pnk Power distribution system Power tops system Rap fuse sply volt Rear fuse block (right rear of luggage compt) Rf turn signal lamp sply volt Rr door ajar sw sig Rr stop/turn lamp sply volt Rvc/snsr fuse 10a Starting/charging system Stop lamp sw sig Trunk, tailgate, fuel doors & door locks systems Windshield outside moisture sens sig 1 Windshield outside moisture sens sig 2 Windshield washer rly ctrl Windshield wiper mtr prk sw sig Windshield wiper sw sig 2 Wiper/washer system
COMPUTER DATA LINES Computer Data Lines Wiring Diagram (1 of 2) for Cadillac CTS 2008 List of elements for Computer Data Lines Wiring Diagram (1 of 2) for Cadillac CTS 2008: 36 (behind left kick panel) g200 (not used) Audio amplifier (if equipped) (rear of left strut tower) Data link connector (dlc) (under left side of dash) Disply fuse 10a Driver door module (ddm) (on left front door, under door trim panel) Driver window motor (center of driver's door) Front passenger door module (fpdm) (on right front door, under door trim panel) Hot at all times Hvac control module (behind center of dash, below radio) Inflatable restraint front passenger presence system (pps) sensor Inflatable restraint sensing & diagnostic module (sdm) (under center console) Instrument panel cluster (ipc) Interconnect network 1 Interconnect network 2 J200 J201 Jx201 (in body harness, near left front inflatable restraint side impact sensor) Jx301 (in body harness, near left front inflatable restraint side impact sensor) Lo spd gmlan serial data Local interconnect network 1 Local interconnect network 2 Logic Memory seat module (msm) (w/ memory) (under driver's seat) Passenger window motor (center of passenger's door) Radio Radio/hvac control module (behind center of dash, below radio) Rear object sensor control module (w/ parking assist) (under right side of rear shelf) Remote control door lock receiver (rcdlr) (w/ remote start) Serial data lo spd gmlan Tan Television antenna module Theft deterrent control module (w/o remote start) (at top of steering column) Underhood fuse block (right front of engine compt) W/ onstar W/o onstar Computer Data Lines Wiring Diagram (2 of 2) for Cadillac CTS 2008 List of elements for Computer Data Lines Wiring Diagram (2 of 2) for Cadillac CTS 2008: 31 (in body harness, near left front inflatable restraint side impact sensor) jx201 A/t Active pedestrian protection w/o awd Awd w/0 active pedestrian protection Body control module Data communication enable Data link resistor (mexico) Data link resistor noise filter Electronic brake control module (ebcm) (at right front corner of engine compt) Engine control module (ecm) (3.6 (vin 7): on front right valve cover) Headlamp module (w/ hid) (front of engine compt) Hi spd gmlan data bus + Hi spd gmlan data bus - J280 (in i/p harness, near branch for clutch pedal position sensor) Lo spd gmlan serial data M/t Pedestrian impact detection module Tan Transfer case shift control module (w/ awd) Transmission control module (tcm) (at right front of engine compt) Underhood fuse block (right front of engine compt) Vehicle communication interface module (vcim) (w/ onstar) (in rear compt, behind right strut tower) W/ active pedestrian protection W/ active pedestrian protection & awd W/ awd W/ hid W/ onstar W/0 active pedestrian protection & awd W/o awd W/o hid W/o onstar
COOLING FAN Cooling Fan Wiring Diagram for Cadillac CTS 2008 List of elements for Cooling Fan Wiring Diagram for Cadillac CTS 2008: 31 87a After boil heater rly ctrl After boil relay (3.6l (vin v)) Auxiliary coolant pump (3.6l (vin v)) Computer data lines system Drl/ eng pump fuse 10a Ect sens sig Emis 2 fuse 15a Engine control module (ecm) (3.6l (vin 7): on front right valve cover) Engine coolant temperature (ect) sensor (side of left cylinder head) Fan 1 fuse 30a Fan 1 relay Fan 2 fuse 30a Fan 2 relay Fan s/p relay G101 (near left front strut tower) G104 (on right body rail, near right headlight) G132 (top right of engine) Hi spd cooling fan rly ctrl Hi spd gmlan serial data bus+ Hi spd gmlan serial data bus- Hot at all times Hot w/ pwr/ trn relay energized Hvac control module (behind center of dash, below radio) Left engine cooling fan (left side of radiator) Lo ref Lo spd gmlan serial data bus+ Lo spd gmlan serial data bus- Right engine cooling fan (right side of radiator) Tan Underhood fuse block (right front of engine compt)
CRUISE CONTROL Cruise Control Wiring Diagram for Cadillac CTS 2008 List of elements for Cruise Control Wiring Diagram for Cadillac CTS 2008: 52 (above accelerator pedal) accelerator pedal position (app) sensor (front center of engine) throttle body (on clutch master cylinder) clutch pedal position (cpp) sensor 5 volt ref 1 5 volt ref 2 5 volt ref 3 App sens 1 sig App sens 2 sig Batt positive volt Body control module (bcm) Brake pedal position sensor (near top of brake pedal) Cancel Computer data lines system Cruise ctrl ind sig Cruise ctrl sw sig Cruise ind Cruise switch Ctrl sply volt Emis 2 fuse 15a Engine control module (ecm) (3.6l (vin 7): on front right valve cover) Engine controls system G132 (top right of engine) Gnd Hot w/ pwr/trn relay energized Inflatable restraint steering wheel module coil (below inflatable restraint steering wheel module) Instrument panel cluster (ipc) J182 (in engine harness, near branch for brake booster pump relay) J285 (in steering column harness, near branch for body control module) Left steering wheel control switch Logic Low ref Res + Sens low ref Sens sig position Sens volt ref 1 Serial data Serial data + Serial data - Set - Sound systems Stop lamp sw sig Tac motor ctrl 1 Tac motor ctrl 2 Tan Tp sens 1 sig Tp sens 2 sig Underhood fuse block (right front of engine compt) Vehicle speed sensor (vss) (5 speed m/t: on right rear of transmission) (6 speed m/t: on left rear of transmission) Vss hi sig Vss high sig W/ steering wheel W/o steering wheel
DEFOGGERS Defoggers Wiring Diagram for Cadillac CTS 2008 List of elements for Defoggers Wiring Diagram for Cadillac CTS 2008: 27 (behind right kick panel) g201 A x2 Computer data lines system Driver door module (ddm) (on driver door, under door trim panel) Driver outside rearview mirror Front passenger door module (fpdm) (on passenger front door, under door trim panel) G104 (on right body rail, near right headlight) G200 (behind left kick panel) G401 (at right rear shock tower) G402 (at left rear shock tower) Heated mirror element Hot at all times Hvac control module (behind center of dash, below radio) J510 J610 Logic Low speed gmlan serial data Passenger outside rearview mirror Radio/hvac control Rear defog fuse 50a Rear defog relay Rear defog rly ctrl Rear defogger ind Rear defogger switch Rear window defogger Underhood fuse block (right front of engine compt) X1 b
ELECTRONIC POWER STEERING Electronic Power Steering Wiring Diagram for Cadillac CTS 2008 List of elements for Electronic Power Steering Wiring Diagram for Cadillac CTS 2008: 23 (behind left kick panel) 5v ref Abs fuse 30a Actr sply volt Batt positive volt Computer data lines system Driver information center (dic) Electronic brake control module (ebcm) (at right front corner of engine compt) G110 (on right frame rail, near abs module) G200 Gnd Hot at all times Instrument panel cluster (ipc) J205 Logic Red Serial data bus + Serial data bus - Steering actr ctrl Steering wheel position sensor (near middle of steering column) Tan Underhood fuse block (right front of engine compt) Variable effort steering actuator (on power steering rack assembly)
ENGINE PERFORMANCE
3.6L VIN 7 3.6L VIN 7, Engine Performance Wiring Diagram (1 of 5) for Cadillac CTS 2008 List of elements for 3.6L VIN 7, Engine Performance Wiring Diagram (1 of 5) for Cadillac CTS 2008: 69 (in engine harness, near branch for brake booster pump relay) (in engine harness, near branch for underhood fuse block) (in engine harness, near branch for underhood fuse block) j185 (in fuel tank harness, near inline con- nector x420) j400 (on clutch master cylinder) clutch pedal position (cpp) sensor (on front right valve cover) (on vehicle underbody, above rear differential) evaporative emission (evap) canister vent solenoid valve (top right of engine) g132 (under vehicle, right side of transmission) back up lamp switch 5v ref 2 5v ref 3 A/c refrigerant pressure sensor (near left front strut tower, on a/c refrigerant line) Air conditioning system App sens 1 sig App sens 2 sig Batt+ volt Clutch rly ctrl Cnstr/ vent fuse 10a Computer data lines system Cooling fans system Ecm fuse 15a Ecm/ tcm ign fuse 15a Engine control module (ecm) Exterior lights system Fan rly ctrl Fuel level sens Fuel level sensor Fuel pump & sender assembly (in fuel tank) Fuel tank pressure sensor (in fuel tank) G132 (top right of engine) G401 (at right rear shock tower) Gnd H2os hi sig Heated oxygen sensor bank 1 sensor 2 (on left exhaust pipe, before catalytic converter) Heated oxygen sensor bank 2 sensor 2 (on right exhaust pipe, after catalytic converter) Hi volt ctrl cyl 3 Ho2s htr lo ctrl Ho2s lo sig Hot at all times Hot w/ ign main relay energized Ign 1 volt J181 J182 J187 Lamp sw sig Lo ref Maf sens sig Main rly ctrl Mil ctrl Nca Pnk Press sens sig Rear fuse block (right rear of luggage compt) Rly ctrl Sens lo ref Sens sig Sens sig position Sens volt ref 1 Serial data bus+ Serial data bus- Starting/ charging system Str rly coil ctrl Sw sig/sply volt Tan Temp sens sig Underhood fuse block (right front of engine compt) Vent sol ctrl Vss hi sig Wakeup serial data 3.6L VIN 7, Engine Performance Wiring Diagram (2 of 5) for Cadillac CTS 2008 List of elements for 3.6L VIN 7, Engine Performance Wiring Diagram (2 of 5) for Cadillac CTS 2008: 31 Acc Accelerator pedal position (app) sensor (above accelerator pedal) Body control module (bcm) Camshaft position (cmp) sensor (exhaust bank 1) (front of left cylinder head) Camshaft position (cmp) sensor (exhaust bank 2) (front of right cylinder head) Camshaft position (cmp) sensor (intake bank 1) (front of right cylinder head) Camshaft position (cmp) sensor (intake bank 2) (front of left cylinder head) Computer data lines system Ecm fuse 10a Emis 1 fuse 15a Emis 2 fuse 15a Even coils fuse 15a Fuel pump fuse 20a Fuel pump relay G132 (top right of engine) G401 (at right rear shock tower) Gmlan data Hot at all times Ignition switch J183 J260 (w/o remote start) Mass air flow sensor (maf) & intake air temperature (iat) sensors (left front of engine compt) Odd coils fuse 15a Off Pnk Pwr/ trn relay Run Start Tan Underhood fuse block (right front of engine compt) Vehicle speed sensor (on right rear of transmission) 3.6L VIN 7, Engine Performance Wiring Diagram (3 of 5) for Cadillac CTS 2008 List of elements for 3.6L VIN 7, Engine Performance Wiring Diagram (3 of 5) for Cadillac CTS 2008: 25 (center rear of intake manifold) intake manifold tuning (imt) solenoid valve (front of left cylinder head) camshaft position (cmp) actuator solenoid (exhaust bank 2) (front of right cylinder head) camshaft position (cmp) actuator solenoid (exhaust bank 1) (front of right cylinder head) camshaft position (cmp) actuator solenoid (intake bank 1) (top right side of engine) evaporative emission (evap) canister purge solenoid valve Camshaft position (cmp) actuator solenoid (intake bank 2) (front of left cylinder head) Computer data lines system Crankshaft position (ckp) sensor (right side of engine) Driver information center (dic) Engine oil pressure (eop) sensor (in oil filter housing) G132 (top right of engine) Gmlan lo spd Gnd d Heated oxygen sensor bank 1 sensor 1 (on left exhaust pipe, before catalytic converter) Imtv ctrl Instrument panel cluster (ipc) J142 Lo spd gmlan Logic Low engine oil pressure ind Malfunction ind lamp (mil) Nca Position sig Rly fused sply Tan 3.6L VIN 7, Engine Performance Wiring Diagram (4 of 5) for Cadillac CTS 2008 List of elements for 3.6L VIN 7, Engine Performance Wiring Diagram (4 of 5) for Cadillac CTS 2008: 27 (front center of engine) throttle body (in ignition coil/ module harness, near inline connector x132) (top of right cylinder bank) ignition coil 2 (top of right cylinder bank) ignition coil 4 (top of right cylinder bank) ignition coil 6 Ect sens sig Engine control module (ecm) (on front right valve cover) Engine coolant temperature (ect) sensor (side of left cylinder head) G131 (left rear of engine) Heated oxygen sensor bank 2 sensor 1 (on right exhaust pipe, after catalytic converter) Ho2s htr lo ctrl Ho2s lo ref Ho2s ref volt Htr lo ctrl Ic 2 ctrl Ic 4 ctrl Ic 6 ctrl Imt position sig Knock sens 2 sig Knock sens sig Lo ref Nca Oil press sens Spark plug Tan Tp sens 1 sig Tp sens 2 sig 3.6L VIN 7, Engine Performance Wiring Diagram (5 of 5) for Cadillac CTS 2008 List of elements for 3.6L VIN 7, Engine Performance Wiring Diagram (5 of 5) for Cadillac CTS 2008: 48 (in fuel injector harness, near inline connector x121) j151 (in ignition coil/module harness, near inline connector x131) j165 (on right side of engine block) knock sensor (ks) 1 (top of left cylinder bank) fuel injectors 1, 3 & 5 5v ref 1 5v ref 2 5v ref 3 Ckp sens sig Engine control module (ecm) (on front right valve cover) Exhaust sens Exhaust sens (2) Exhaust sol (1) Exhaust sol (2) Fuel injectors 2, 4 & 6 (top of right cylinder bank) G130 (rear of right cylinder head) Gen duty cycle sig Gen turn on sug Hi volt ctrl cyl 1 Hi volt ctrl cyl 2 Hi volt ctrl cyl 3 Hi volt ctrl cyl 4 Hi volt ctrl cyl 5 Hi volt ctrl cyl 6 Ic 1 ctrl Ic 3 ctrl Ic 5 ctrl Ignition coil 1 (top of left cylinder bank) Ignition coil 3 (top of left cylinder bank) Ignition coil 5 (top of left cylinder bank) Imtv ctrl sig Intake sens (1) Intake sens (2) Intake sol Intake sol (1) J145 Knock sens sig Knock sensor (ks) 2 (side of left cylinder bank) Lo ref Nca Plug spark Purge sol ctrl Red Spark plug Starting/ charging system Tac mtr ctrl 1 Tac mtr ctrl 2 Tan X121) j152
3.6L VIN V 3.6L VIN V, Engine Performance Wiring Diagram (1 of 5) for Cadillac CTS 2008 List of elements for 3.6L VIN V, Engine Performance Wiring Diagram (1 of 5) for Cadillac CTS 2008: 63 (at right rear shock tower) g401 (in engine harness, near branch for underhood fuse block) j185 (in fuel tank harness, near inline con- nector x420) j400 (top right of engine) g132 5v ref 2 5v ref 3 A/c refrigerant pressure sensor (near left front strut tower, on a/c refrigerant line) A/t internal mode switch Air conditioning system App sens 1 sig App sens 2 sig Automatic transmission Batt+ volt Clutch rly ctrl Cnstr/ vent fuse 10a Computer data lines system Control solenoid valve assembly Cooling fans system Ctrl actr sig Ecm fuse 15a Ecm/ tcm ign fuse 15a Engine control module (ecm) Evaporative emission (evap) canister vent solenoid valve Exterior lights system Fan rly ctrl Fuel level sens Fuel level sensor Fuel pump & sender assembly (in fuel tank) Fuel tank pressure sensor (in fuel tank) Gnd H2os hi sig Heated oxygen sensor bank 1 sensor 2 (on left exhaust pipe, after catalytic converter) Heated oxygen sensor bank 2 sensor 2 (on right exhaust pipe, after catalytic converter) Hi volt ctrl cyl 3 Ho2s htr lo ctrl Ho2s lo sig Hot at all times Hot w/ ign main relay energized Ign 1 volt J187 Lo ref Maf sens sig Main rly ctrl Mil ctrl Nca Pnk Press sens sig Rear fuse block (right rear of luggage compt) Rly ctrl Sens lo ref Sens sig Sens volt ref 1 Serial data bus+ Serial data bus- Starting/ charging system Str rly coil ctrl Sw sig/sply volt Tan Temp sens sig Transmissions system Underhood fuse block (right front of engine compt) Vent sol ctrl Wakeup serial data 3.6L VIN V, Engine Performance Wiring Diagram (2 of 5) for Cadillac CTS 2008 List of elements for 3.6L VIN V, Engine Performance Wiring Diagram (2 of 5) for Cadillac CTS 2008: 32 15a Acc Accelerator pedal position (app) sensor (above accelerator pedal) Body control module (bcm) Brk vac pump fuse 20a Camshaft position (cmp) sensor (exhaust bank 1) Camshaft position (cmp) sensor (exhaust bank 2) Camshaft position (cmp) sensor (intake bank 1) Camshaft position (cmp) sensor (intake bank 2) Computer data lines system Ecm fuse 10a Emis 1 fuse 15a Emis 2 fuse 15a Even coils fuse Fuel pump fuse 20a Fuel pump relay G132 (top right of engine) G401 (at right rear shock tower) Gmlan data gmlan data x3 Hot at all times Ignition switch J183 J260 (w/o remote start) Mass air flow sensor (maf) & intake air temperature (iat) sensors (left front of engine compt) Odd coils fuse Off Pnk Pwr/ trn relay Run Start Tan Underhood fuse block (right front of engine compt) 3.6L VIN V, Engine Performance Wiring Diagram (3 of 5) for Cadillac CTS 2008 List of elements for 3.6L VIN V, Engine Performance Wiring Diagram (3 of 5) for Cadillac CTS 2008: 23 (top right side of engine) evaporative emission (evap) canister purge solenoid valve Auxiliary brake booster pump Brake booster pump relay Camshaft position (cmp) actuator solenoid valve (exhaust bank 1) Camshaft position (cmp) actuator solenoid valve (exhaust bank 2) Camshaft position (cmp) actuator solenoid valve (intake bank 1) Camshaft position (cmp) actuator solenoid valve (intake bank 2) Computer data lines system Crankshaft position (ckp) sensor (right side of engine) Driver information center (dic) Engine oil pressure (eop) sensor (in oil filter housing) Fuel rail pressure (frp) sensor G132 (top right of engine) Gmlan lo spd Heated oxygen sensor bank 1 sensor 1 (on left exhaust pipe, before catalytic converter) Instrument panel cluster (ipc) J142 J184 Logic Low engine oil pressure ind Malfunction ind lamp (mil) Nca Tan 3.6L VIN V, Engine Performance Wiring Diagram (4 of 5) for Cadillac CTS 2008 List of elements for 3.6L VIN V, Engine Performance Wiring Diagram (4 of 5) for Cadillac CTS 2008: 31 (front center of engine) throttle body (top of right cylinder bank) ignition coil 2 (top of right cylinder bank) ignition coil 4 (top of right cylinder bank) ignition coil 6 Actr lo ctrl Ect sens sig Engine control module (ecm) Engine coolant temperature (ect) sensor (side of left cylinder head) G131 (left rear of engine) Heated oxygen sensor bank 2 sensor 1 (on right exhaust pipe, before catalytic converter) Hi volt sply cyl 1 Hi volt sply cyl 4 Ho2s htr lo ctrl Ho2s lo ref Ho2s ref volt Htr lo ctrl Ic 2 ctrl Ic 4 ctrl Ic 6 ctrl Ign 1 volt J162 Knock sens 2 sig Knock sens sig Lo ref Nca Oil press sens Plug spark Spark plug Tan Tp sens 1 sig Tp sens 2 sig 3.6L VIN V, Engine Performance Wiring Diagram (5 of 5) for Cadillac CTS 2008 List of elements for 3.6L VIN V, Engine Performance Wiring Diagram (5 of 5) for Cadillac CTS 2008: 59 (on right side of engine block) knock sensor (ks) 1 (rear of right cylinder head) g130 (top of left cylinder bank) fuel injector 3 (top of left cylinder bank) fuel injector 5 (top of right cylinder bank) (top of right cylinder bank) fuel injector 6 5v ref 1 5v ref 2 5v ref 3 Actr hi ctrl Ckp sens sig Cooling fans system Engine control module (ecm) Exhaust sens Exhaust sens (2) Exhaust sol (1) Exhaust sol (2) Frp sens sig Fuel injector 1 (top of left cylinder bank) Fuel injector 2 Fuel injector 4 Gen duty cycle sig Gen turn on sug Hi volt ctrl cyl 1 Hi volt ctrl cyl 2 Hi volt ctrl cyl 3 Hi volt ctrl cyl 4 Hi volt ctrl cyl 5 Hi volt ctrl cyl 6 Hi volt sply cyl 2 Hi volt sply cyl 3 Hi volt sply cyl 5 Hi volt sply cyl 6 High pressure fuel pump Htr rly ctrl Ic 1 ctrl Ic 3 ctrl Ic 5 ctrl Ignition coil 1 (top of left cylinder bank) Ignition coil 3 (top of left cylinder bank) Ignition coil 5 (top of left cylinder bank) Intake sens (1) Intake sens (2) Intake sol Intake sol (1) J161 Knock sens sig Knock sensor (ks) 2 (side of left cylinder bank) Lo ref Nca Plug spark Purge sol ctrl Red Rly coil ctrl Spark plug Starting/charging system Tac mtr ctrl 1 Tac mtr ctrl 2 Tan
EXTERIOR LIGHTS Backup Lamps Wiring Diagram for Cadillac CTS 2008 List of elements for Backup Lamps Wiring Diagram for Cadillac CTS 2008: 26 Automatic transmission Automatic transmission internal mode switch B+ volt Backup lamp sply volt x6 Bcm 4 fuse 10a Body control module (bcm) Computer data lines system Control solenoid valve assembly G401 (at right rear shock tower) G402 (at left rear shock tower) Gm lan ser data bus + Gm lan ser data bus - Hot at all times Inside rearview mirror (isrvm) J379 (in body harness, near branch for g102) Left tail lamp Logic Right tail lamp Serial data + Serial data - Sig a Sig b Sply volt Tan Transmission control module Underhood fuse block (right front of engine compt) Exterior Lamps Wiring Diagram (1 of 2) for Cadillac CTS 2008 List of elements for Exterior Lamps Wiring Diagram (1 of 2) for Cadillac CTS 2008: 53 10 volt ref Auto Automatic transmission (equipped) B+ volt Backup lamps circuit Bcm 4 fuse 10a Bcm 5 fuse 10a Bcm 6 fuse 15a Body control module (bcm) Brake pedal position sensor (near top of brake pedal) Computer data lines system Detection sig Display fuse 10a Engine control module (ecm) (on front right valve cover) G101 (near left front strut tower) G104 (on right body rail, near right headlight) G200 (behind left kick panel) G402 (at left rear shock tower) Gnd Hazard sw sig Hazard switch Head Hot at all times Instrument panel cluster (ipc) J180 J186 J201 J205 J240 Left Left front turn signal lamp Left tail lamp Left turn ind Left turn sw sig Logic Low ref Off Park Park lamp on sig Radio/hvac control Right Right front turn signal lamp Right turn ind Right turn sw sig Serial data Sply volt Sply volt x2 Stop lamp sw sig Stp lp Stp lp sply volt Tan Turn signal/ multi-function switch Underhood fuse block (right front of engine compt) Exterior Lamps Wiring Diagram (2 of 2) for Cadillac CTS 2008 List of elements for Exterior Lamps Wiring Diagram (2 of 2) for Cadillac CTS 2008: 25 (in forward lamp harness, near right cooling fan connector) j116 (in license lamp harness, near left license lamp) j420 Backup lamps circuit Center high mounted stop lamp (chmsl) G101 (near left front strut tower) G102 (right front of engine compt) G401 (at right rear shock tower) G402 (at left rear shock tower) Hot at all times J180 J186 J401 J430 Left front marker lamp Left front park lamp Left license lamp Logic Lt/pos/ lp relay Lt/pos/lp fuse 10a Rear fuse block (right rear of luggage compt) Right front marker lamp Right front park lamp Right license lamp Right tail lamp Rt/pos/lp fuse 10a
GROUND DISTRIBUTION Ground Distribution Wiring Diagram (1 of 4) for Cadillac CTS 2008 List of elements for Ground Distribution Wiring Diagram (1 of 4) for Cadillac CTS 2008: 68 (3.6l (vin v)) auxiliary coolant pump (3.6l (vin v)) vacuum pump (a/t) automatic transmission (if equipped) headlamp module (if equipped) headlamp wash relay (if equipped) headlamp washer fluid pump (if equipped) hood ajar switch (if equipped) left front fog lamp (if equipped) right front fog lamp (if equipped) windshield washer solvent heater (m/t) park position switch (m/t) vehicle speed sensor (vss) (right front of engine compt) underhood fuse block (w/ hid) left daytime running lamp (drl) (w/ hid) left front park lamp (w/ hid) left headlamp (w/ hid) left high beam headlamp (w/ hid) right daytime running lamp (drl) (w/ hid) right front park lamp (w/ hid) right headlamp (w/ hid) right high beam headlamp (w/o hid) left high beam headlamp (w/o hid) left low beam headlamp (w/o hid) right high beam headlamp (w/o hid) right low beam headlamp 3.6l (vin 7) 3.6l (vin v) 87a A/c compressor clutch Battery Brake fluid level switch Electronic brake control module (ebcm) Engine control module (ecm) Fan s/p relay G101 (near left front strut tower) G102 (right front of engine compt) G104 (on right body rail, near right headlight) G106 (right rear of engine) G110 (on right frame rail, near abs module) G130 (rear of right cylinder head) G131 (left rear of engine) G132 (top right of engine) G134 (right side of engine compt) G405 (right side of luggage compt) Headlight assembly harness, near inline connector x114) Horn assembly Ign 1 relay Ignition coil/ module 1 Ignition coil/ module 2 Ignition coil/ module 3 Ignition coil/ module 4 Ignition coil/ module 5 Ignition coil/ module 6 Intake manifold tuning solenoid (imt) valve Left engine cooling fan Left front marker lamp Left front turn signal lamp Mass air flow (maf)/ intake air temperature (iat) sensor Nca Near headlight module) Rear defog relay Right front marker lamp Right front turn signal lamp Strtr relay Windshield washer fluid level switch Windshield washer fluid pump Windshield wiper motor Wpr relay Ground Distribution Wiring Diagram (2 of 4) for Cadillac CTS 2008 List of elements for Ground Distribution Wiring Diagram (2 of 4) for Cadillac CTS 2008: 68 (awd) transfer case shift control module (if equipped) pedestrian impact detection module (if equipped) windshield washer solvent heater (in automatic transmission shift lever harness, near inline connector x230) (in steering column harness, near inline connector x202) j208 (w/ active brake) steering wheel position sensor (w/ communications system) (w/ deluxe interior lamp package) driver seat accent lamp (w/ deluxe interior lamp package) i/p left accent lamp (w/ deluxe interior lamp package) i/p left lower accent lamp (w/ deluxe interior lamp package) left rear door accent lamp (w/ deluxe interior lamp package) left rear door handle accent lamp (w/ infotainment system) radio/ hvac display (w/o remote keyless entry) theft deterrent module (tdm) (w/o steering wheel) left steering wheel control switch A/t Automatic transmission shift lock control solenoid Body control module (bcm) Cigar lighter Courtesy lamp D x2 Data link connector (dlc) Dome lamp Driver back heated seat element Driver cushion heated seat element Driver door accent lamp Driver door handle accent lamp Driver door latch Driver door lock switch Driver door module (ddm) Driver information center (dic) switch Driver outside rearview mirror Driver seat adjuster switch Driver window motor Front fog lamp G200 (behind left kick panel) High beam Horn switch Hvac control module I/p dimmer switch Ignition lock cylinder control actuator Ignition lock cylinder control switch Inflatable restraint steering wheel module coil Instrument panel cluster (ipc) J200 (in i/p harness, near inline x202) J201 (in i/p harness, near hazard switch connector) J205 (in steering column harness, near inline connector x202) J245 (in steering wheel harness, near branch for inline connector x202) J376 J505 (w/ deluxe interior lamp package) (in driver door trim harness, near branch to accent lamp) J510 (in driver door harness, near branch to left front door speaker) J710 (in left rear door harness, near branch to inline connector x701) J715 (in left rear door trim harness, near inline connector x701) Left rear door latch Left rear window switch Memory seat module (msm) Park lamp Prndl lamp Right steering wheel control switch Turn signal Turn signal/ multifunction switch W/ climate control seats W/ fog lamp W/ memory W/ remote keyless, a/t W/o memory W/o remote keyless, a/t & m/t X215 e Ground Distribution Wiring Diagram (3 of 4) for Cadillac CTS 2008 List of elements for Ground Distribution Wiring Diagram (3 of 4) for Cadillac CTS 2008: 57 (if equipped) rear abject sensor control module (if equipped) theft deterrent alarm (if equipped) theft deterrent alarm siren (if equipped) vehicle communication interface module (vcim) (w/ 8 way power adjuster passenger seat) passenger seat adjuster switch (w/ climate control seats) passenger back heated seat element (w/ climate control seats) passenger cushion heated seat element (w/ deluxe interior lamp package) i/p right accent lamp (w/ deluxe interior lamp package) i/p right lower accent lamp (w/ deluxe interior lamp package) passenger seat accent lamp (w/ deluxe interior lamp package) right rear door accent lamp (w/ deluxe interior lamp package) right rear door handle accent lamp (w/ infotainment system) radio/ hvac display (w/ infotainment system) traffic data antenna (w/ power lumbar control seat) passenger seat lumbar adjust switch (w/ premium audio) rear speaker subwoofer A7 x1 Audio amplifier B x1 Blower motor control module Body control module (bcm) Center console accessory power outlet 1 Center console accessory power outlet 2 Connector x801) Courtesy lamp Electronic compass module Front passenger door module (fpdm) G201 (behind right kick panel) G306 (under driver's seat) G402 (at left rear shock tower) I/p switch assembly Inflatable restraint front passenger presence system (pps) sensor Inflatable restraint sensing & diagnostic module (sdm) J202 (in i/p harness, near hazard switch connector) J240 (in i/p harness, near inline connector x200) J308 (in console harness, near inline connector x312) J374 (w/ 8 way power adjuster passenger seat, power lumber control seats & climate control seats) (in front passenger seat assembly harness, near inline connector x307) J605 (in front passenger door trim harness, near branch to accent lamp) J610 (in front passenger door harness, near branch to right front door speaker) J805 (in right rear door trim harness, near branch to inline connector x801) Left tail lamp Nca Passenger door accent lamp Passenger door handle accent lamp Passenger door latch Passenger door lock switch Passenger outside rearview mirror Passenger window motor Radio Radio/ hvac control Rear window defogger Right rear door courtesy lamp Right rear door latch Right rear window switch W/ deluxe interior lamp package W/o deluxe interior lamp package Yaw & lateral accelerometer sensor Ground Distribution Wiring Diagram (4 of 4) for Cadillac CTS 2008 List of elements for Ground Distribution Wiring Diagram (4 of 4) for Cadillac CTS 2008: 45 (if equipped) garage door opener (gdo) (if equipped) windshield outside moisture sensor (right rear of luggage compt) rear fuse block (w/ deluxe interior lamp package) overhead console accent lamp (w/ remote start) rear compartment lid release switch (w/ transparent glass fixed) sunroof shade switch (w/ transparent glass fixed) sunroof switch 87a A x2 Center high mounted stop lamp Courtesy lamp Fuel pump & sender assembly Fuel/ pump relay G401 (at right rear shock tower) Inside rearview mirror (isrvm) J371 (in headliner harness, near branch to left sunshade) J372 (in headliner harness, near branch to right sunshade) J373 (in sunroof assembly harness, near inline connector x401) J378 (w/ garage door opener windshield wiper system) (in headliner harness, near branch to right sunshade) J401 (in license lamp harness, near inline connector x421) J425 (in rear bumper fascia harness, near branch for rear fog lamps) J430 (in body harness, near branch to rear fuse block) Lck relay Left license lamp Left rear fog lamp Left sunshade Nca Rear compartment lid latch Rear window defogger Remote control door lock receiver (rcdlr) Right license lamp Right rear fog lamp Right sunshade Right tail lamp Spare relay Stop/lp relay Sunroof motor Sunroof shade module Tire pressure module Trunk/ relse relay Unlck relay W/ low tire pressure indicator W/ low tire pressure indicator var 2 W/ transparent glass fixed X1 s
HEADLIGHTS Adaptive Front Lighting Wiring Diagram for Cadillac CTS 2008 List of elements for Adaptive Front Lighting Wiring Diagram for Cadillac CTS 2008: 28 (on right body rail, near right headlamp) g104 (or 5735) Afs fuse 15a Batt+ volt Computer data lines system Data bus+ Data bus- Data enable Gnd Headlamp module (front of engine compt) Hot at all times J170 (in forward lamp harness, near headlight module) J172 (in forward lamp harness, near headlight module) J174 (in forward lamp harness, near inline connector x114) J175 (in forward lamp harness, near inline connector x115) Left adaptive forward lighting (afl) motor Left headlamp Mtr lo ref Mtr sig 1 Mtr sig 2 Mtr sig 3 Mtr sig 4 Nca Pnk Right adaptive forward lighting (afl) motor Right headlamp Tan Underhood fuse block (right front of engine compt) Headlamps Wiring Diagram, with High Intensity Discharge for Cadillac CTS 2008 List of elements for Headlamps Wiring Diagram, with High Intensity Discharge for Cadillac CTS 2008: 66 (drl) (in forward lamp harness, near branch for rear headlight leveling sensor) (part of left headlight assembly) left headlamp ballast (part of right headlight assembly) right headlamp ballast Auto Body control module (bcm) Computer data lines system Drl rt fuse 15a Drl/eng pump fuse 10a Flash to pass sw Fog Fog lamp indicator Fog lamp relay Fog lamp sw Frt fog fuse 15a G101 (near left front strut tower) G102 (right front of engine compt) G104 (on right body rail, near right headlight) G200 (behind left kick panel) Gmlan serial data Hdlmps off Hdlmps on Hdlp dimmer sw Hdlp rly ctrl Head Hi beam relay High beam indicator Hot at all times Hvac control module (behind center of dash, below radio) Instrument panel cluster J176 (in forward lamp harness, near branch to right headlight motor) J178 J180 J186 J205 Jx201 (in body harness, near left front inflatable restraint side impact sensor) Left daytime running lamp Left front fog lamp Left headlight high beam solenoid (part of left headlight assembly) Light sensor sig Lines system computer data Lo beam drl lh fuse 15a/7.5a Lo beam relay Lo ref Logic Lt drl relay Lt hi beam fuse 10a Lt lo beam fuse 15a/20a Off Park Park brake sw sig Park brake switch (on park brake assembly) Pnk Right daytime running lamp Right front fog lamp Right headlight high beam solenoid (part of right headlight assembly) Rly ctrl Rt drl relay Rt hi beam fuse 10a Rt lo beam fuse 20a Serial data Sunload sensor (top center of i/p, on defrost grill) Turn signal/ multifunction switch Underhood fuse block (right front of engine compt) Windshield sw sig Wiper/washer system Headlamps Wiring Diagram, without High Intensity Discharge for Cadillac CTS 2008 List of elements for Headlamps Wiring Diagram, without High Intensity Discharge for Cadillac CTS 2008: 58 Auto Body control module (bcm) Computer data lines system Drl relay Drl rt fuse 7.5a Flash to pass sw Fog Fog lamp indicator Fog lamp relay Fog lamp sw Frt fog fuse 15a G101 (near left front strut tower) G102 (right front of engine compt) G104 (on right body rail, near right headlight) G200 (behind left kick panel) Gmlan serial data Hdlmps off Hdlmps on Hdlp dimmer sw Hdlp rly ctrl Head Hi beam relay High beam indicator Hot at all times Hvac control module (behind center of dash, below radio) Instrument panel cluster J180 J186 J205 Jx201 (in body harness, near left front inflatable restraint side impact sensor) Left front fog lamp Left high beam headlight Left low beam headlamp Light sensor sig Lines system computer data Lo beam drl fuse 15a/ 7.5a Lo beam relay Lo ref Logic Lt hi beam fuse 10a Lt lo beam fuse 10a Off Park Park brake sw sig Park brake switch (on park brake assembly) Pnk Right front fog lamp Right high beam headlight Right low beam headlamp Rly ctrl Rt hi beam fuse 10a Rt lo beam fuse 10a Serial data Sunload sensor (top center of i/p, on defrost grill) Turn signal/ multifunction switch Underhood fuse block (right front of engine compt) Windshield sw sig Wiper/washer system
HORN Horn Wiring Diagram for Cadillac CTS 2008 List of elements for Horn Wiring Diagram for Cadillac CTS 2008: 15 (behind left kick panel) g200 (near left front strut tower) g101 Body control module (bcm) High note horn Horn assembly Horn fuse 15a Horn relay Horn relay ctrl Horn switch Hot at all times Inflatable restraint steering wheel module coil (below inflatable restraint steering wheel module) J235 (in i/p harness, near branch for clutch pedal position sensor) J245 Low note horn Underhood fuse block (right front of engine compt)
INSTRUMENT CLUSTER Instrument Cluster Wiring Diagram (1 of 2) for Cadillac CTS 2008 List of elements for Instrument Cluster Wiring Diagram (1 of 2) for Cadillac CTS 2008: 58 (behind left kick panel) g200 Abs ind Air bag ign fuse 10a Batt pos volt Brake ind Charge ind Computer data lines system Coolant temperature gauge Cruise ind Disply fuse 10a Down Driver information center (dic) Driver information center (dic) switch Ecm/tcm ign fuse 15a Engine coolant temperature ind Fasten safety belt ind Front fog lamp ind Fuel level gauge Ground High beam ind Hot at all times Hot w/ ign main relay energized Ign 1 volt Illumination Ind ctrl Instrument panel cluster (ipc) Interior lights system J200 J201 Left turn ind Lo ref Lo spd gmlan Logic Low tire pressure ind Malfunction ind lamp (mil) Menu sw sig Oil level ind Park ind Persona- lization Pnk Power distribution system Right turn ind Security ind Set/ reset Sir ind Speedometer Sply volt Sw sig Tachometer Tan Tow/haul ind Traction control off ind Trip/ fuel Trip/ odometer Underhood fuse block (right front of engine compt) Vehicle information Vsc ind Wiper/washer system Instrument Cluster Wiring Diagram (2 of 2) for Cadillac CTS 2008 List of elements for Instrument Cluster Wiring Diagram (2 of 2) for Cadillac CTS 2008: 44 (right front of engine compt) g102 5-volt ref 1 Batt pos volt Body control module Brake fluid level switch (on brake fluid reservoir) Computer data lines system Display Electronic compass module (under left side of rear shelf) Engine control module (ecm) (3.6l (vin 7): on front right valve cover) Engine controls system Engine oil pressure (eop) sensor (in oil filter housing) Fuel level sens sig Fuel level sensor Fuel pump & sender assembly (in fuel tank) G132 (top right of engine) G201 (behind right kick panel) G402 (at left rear shock tower) Ground Hi spd gmlan serial data bus+ Hi spd gmlan serial data bus- Hot at all times Ign 1 volt Ign 3 volt J240 J265 J275 J400 (in fuel tank harness, near inline connector x420) Lo ref Lo spd gmlan serial data Local interconnect network 3 Logic M/t clutch position sens lo ref Mil ctrl Oil press sens sig Park brake sw sig Park brake switch (on park brake assembly) Pnk Power distribution system Radio/hvac control Rdo fuse 15a Rear fuse block (right rear of luggage compt) Rvc/snsr fuse 10a Secondary fuel level sens sig Tan
INTERIOR LIGHTS Courtesy Lamps Wiring Diagram for Cadillac CTS 2008 List of elements for Courtesy Lamps Wiring Diagram for Cadillac CTS 2008: 57 (at rear of left rear door) left rear door latch (at rear of passenger door) passenger door latch (at rear of right rear door) right rear door latch (behind right kick panel) g201 (in body harness, near branch to inline harness x308) j369 (on right front door, under door trim panel) front passenger door module (fpdm) (part of lid release actuator) rear compartment lid release actuator Bcm 2 fuse 15a Bcm 7 fuse 10a Body control module (bcm) Computer data lines system Driver door latch (at rear of driver door) Driver door module (ddm) (on left front door, under door trim panel) G200 (behind left kick panel) G201 (behind right kick panel) G401 (at right rear shock tower) Hot at all times I/p compartment lamp I/p compartment lamp switch J200 J202 J360 (in headliner harness, near inline connector x308) J363 (in body harness, near breakaway to right front inflatable restraint side impact sensor) J370 (in headliner harness, near branch for left rear courtesy/ reading lamp) J371 J372 J430 J510 J610 J710 J715 J805 J810 Left front courtesy/ reading lamps Left front door courtesy lamp Left i/p courtesy lamp Left rear courtesy/ reading lamps Left rear door courtesy lamp Left sunshade Lf door ajar Lp ctrl hi Lp ctrl l0 Lp ctrl lo Lp rly ctrl Lp sply volt Lr door ajar sw Rear compartment courtesy lamp Rf door ajar Right front courtesy/ reading lamps Right front door courtesy lamp Right i/p courtesy lamp Right rear courtesy/ reading lamps Right rear door courtesy lamp Right sunshade Rr door ajar sw Serial data Underhood fuse block (right front of engine compartment) Instrument Illumination Wiring Diagram (1 of 2) for Cadillac CTS 2008 List of elements for Instrument Illumination Wiring Diagram (1 of 2) for Cadillac CTS 2008: 46 (behind left kick panel) g200 12v Auto Bcm 2 fuse 15a Bcm 7 fuse 10a Body control module (bcm) Computer data lines system Courtesy lamp switch Dimming ctrl Driver information center (dic) switch G200 (behind left kick panel) G201 (behind right kick panel) G401 (at right rear shock tower) Head Hot at all times I/p dimmer sw sig I/p dimmer switch Ic 2 ctrl Inflatable restraint steering wheel module coil (below inflatable restraint steering wheel module) J200 J201 J205 J220 (in i/p harness, near branch for instrument panel cluster) J245 J368 (in body harness, near branch to inflatable restraint sensing & diagnostic module) J372 J376 J715 J805 Left rear window Left steering wheel control switch (w/o steering wheel) Off Park Park lp sw on sig Prndl lamp (a/t) Right rear window Right steering wheel control switch Serial data Str/ whl/ illum fuse 2a Sunroof shade switch (w/ transparent glass fixed) Sunroof switch (w/ transparent glass fixed) Sw on sig Sw sig Switch Turn signal/ multi-function switch Underhood fuse block (right front of engine compartment) Instrument Illumination Wiring Diagram (2 of 2) for Cadillac CTS 2008 List of elements for Instrument Illumination Wiring Diagram (2 of 2) for Cadillac CTS 2008: 36 Computer data lines system Driver door accent lamp Driver door handle accent lamp Driver door module (ddm) (on left front door, under door trim panel) Driver seat accent lamp Front passenger door module (fpdm) (on right front door, under door trim panel) G200 (behind left kick panel) G201 (behind right kick panel) G401 (at right rear shock tower) Ic 2 ctrl J200 J202 J215 (in i/p harness, near branch for blower motor control module) J371 J374 J375 J503 (in driver door trim harness, near branch to accent lamp) J505 J605 J615 (in front passenger door trim harness, near branch to accent lamp) J705 (in left rear door trim harness, near branch to accent lamp-left rear door handle) J715 J805 Left i/p accent lamp Left rear door accent lamp Left rear door handle accent lamp Lower left i/p accent lamp Lower right i/p accent lamp Overhead console accent lamp Passenger door accent lamp Passenger door handle accent lamp Passenger seat accent lamp Right i/p accent lamp Right rear door accent lamp Right rear door handle accent lamp Serial data
MEMORY SYSTEMS Memory Mirrors Wiring Diagram for Cadillac CTS 2008 List of elements for Memory Mirrors Wiring Diagram for Cadillac CTS 2008: 20 (behind left kick panel) g200 (behind right kick panel) g201 Computer data lines system Dr/lck fuse 15a Driver door module (ddm) (on left front door, under door trim panel) Driver outside rearview mirror Folding Front passenger door module (fpdm) (on right front door, under door trim panel) Hot at all times J510 J610 Left Logic Passenger outside rearview mirror Pdm fuse 15a Rear fuse block (right rear of luggage compt) Right Sel left Sel right W/ power folding mirror Memory Seat Wiring Diagram (1 of 3) for Cadillac CTS 2008 List of elements for Memory Seat Wiring Diagram (1 of 3) for Cadillac CTS 2008: 54 (behind left kick panel) g200 (in driver seat assembly harness, near memory seat module) j382 (in driver seat back, between cushion & upholstery) driver back heated seat element (in front of driver seat between seat cushion & upholstery) driver cushion heated seat element Batt positive volt Down steering column tilt mtr ctrl Driver seat horizontal motor (under driver seat) Driver seat lumbar horizontal motor (in driver seat back) Driver seat recline motor (under driver seat) Drv position sw high ref Drv seat cushion heated mod cool ctrl Drv seat cushion heated mod heat ctrl Drv seat cushion temp sens low ref Drv seat frt vert mtr down ctrl Drv seat frt vert mtr up ctrl Drv seat horiz mtr forward ctrl Drv seat horiz mtr rearward ctrl Drv seat lumbar horiz position sens sig Drv seat lumbar mtr forward ctrl Drv seat lumbar mtr rearward ctrl Drv seat recline mtr forward ctrl Drv seat recline mtr position sens sig Drv seat recline mtr rearward ctrl Drv seat rr vert mtr down ctrl Drv seat rr vert mtr up ctrl Frt vert seat mtr position sens sig Gnd Horiz seat mtr position sens sig Hot at all times J375 J383 (in driver seat assembly harness, near driver seat adjuster switch) Lf/frt/ pwr/seat circuit breaker 25a Memory seat module (msm) (under driver's seat) Memory sens high ref Memory sens low ref Msm fuse 10a Nca Pass seat cushion heated mod cool ctrl Pass seat cushion heated mod heat ctrl Pass seat cushion temp sens low ref Pass seat cushion temp sens sig Pnk Pwr clmn circuit breaker 25a Rear fuse block (right rear of luggage compt) Red Rev steering column telescope mtr ctrl Rr vert seat mtr position sens sig Seat cushion temp sens sig Steering column telescope mtr forward Steering column telescope sens sig Steering column tilt sens sig Tan Up steering column tilt mtr ctrl W/ tilt telescoping steering column Memory Seat Wiring Diagram (2 of 3) for Cadillac CTS 2008 List of elements for Memory Seat Wiring Diagram (2 of 3) for Cadillac CTS 2008: 16 (in driver seat assembly harness, near driver seat adjuster switch) j384 (in front of passenger seat between seat cushion & upholstery) passenger cushion heated seat element (in front passenger seat back, between cushion & upholstery) passenger back heated seat element B x1 Driver seat back ventilation Driver seat front vertical motor (under driver seat) Driver seat lumbar adjuster switch (if equipped) Driver seat rear vertical motor (under driver seat) G200 (behind left kick panel) Heating & cooling module J375 Pnk Red Steering wheel/column tilt/telescopic actuator Steering wheel/column tilt/telescopic switch (if equipped) Tan Memory Seat Wiring Diagram (3 of 3) for Cadillac CTS 2008 List of elements for Memory Seat Wiring Diagram (3 of 3) for Cadillac CTS 2008: 55 (on left front door, under door trim panel) driver door module (ddm) Computer data lines system Driver memory seat adjuster switch Driver seat adjuster switch Driver seat cushion ventilation Drv seat blower spd ctrl Drv seat lumbar forward sw sig Drv seat lumbar rearward sw sig Exit switch G200 (behind left kick panel) G201 (behind right kick panel) Heating & cooling module High ind Hot w/ ign main relay energized J374 J375 J386 (in driver seat assembly harness, near driver seat cushion ventilation heat & cool module) J387 (in front passenger seat assembly harness, near seat cushion ventilation heat & cool module) J388 J389 Left fan dn Left fan up Left temp + Left temp - Logic Low ind Low spd gmlan serial data Med ind Memory 1 switch Memory 2 switch Memory seat module (msm) (under driver's seat) Misc ign fuse 10a Pass seat blower spd ctrl Passenger seat back ventilation heating & cooling module Passenger seat cushion ventilation heating & cooling module Pnk Pwr seat frt vert dn sw sig Pwr seat frt vert up sw sig Pwr seat horiz forward sw sig Pwr seat horiz rearward sw sig Pwr seat recline forward sw sig Pwr seat recline rearward sw sig Pwr seat rr vert dn sw sig Pwr seat rr vert up sw sig Radio/hvac control Right fan dn Right fan up Right temp + Right temp - Tan Tilt & telescope forward sw sig Tilt & telescope up sw sig Tilt and telescope dn sw sig Tilt and telescope reverse sw sig Underhood fuse block (right front of engine compt)
NAVIGATION Navigation Wiring Diagram, with Surround Amplifier (1 of 4) for Cadillac CTS 2008 List of elements for Navigation Wiring Diagram, with Surround Amplifier (1 of 4) for Cadillac CTS 2008: 47 (rear of left rear shock tower) g402 Anti-lock brakes system Audio common sig Audio mute sig Audio out Audio sig Auxiliary audio sig Batt+ volt Cellular telephone microphone (w/ onstar/ hands free) Coax Common sig Computer data lines system Detection sig Digital radio antenna (w/ digital audio system s-band) Drain Drain wire Gmlan serial data Ground Hot at all times J240 J275 Left audio sig Lo level audio - Lo level audio sig+ Lo level audio sig- Lo ref Lo ref/ground Microphone sig or audio sig Navi audio sig - Navigation antenna Navigation antenna (in center of dash) Nca Pnk Radio Rdo fuse 15a Rear fuse block (right rear of luggage compt) Red Remote enable sig Right audio sig Sig Tan Usb Vehicle communication interface module (vcim) (w/ onstar) (at left rear of engine compt, near windshield) Vehicle spd sig Video display ctrl W/o hands free X215 Navigation Wiring Diagram, with Surround Amplifier (2 of 4) for Cadillac CTS 2008 List of elements for Navigation Wiring Diagram, with Surround Amplifier (2 of 4) for Cadillac CTS 2008: 28 Audio screen Audio sig Auxiliary audio jack Batt+ Batt+ volt Coax Common sig Detection sig Display ctrl Enable sig Enable sig remote a G402 (rear of left rear shock tower) Ground Hot at all times J200 J240 J250 (near inline connector x200) Kick panel) g200 Nav mtr fuse 10a Navigation & traffic data antenna (if equipped) (top center of windshield) Nca Pnk Radio antenna module (above headliner, near rear window) Radio rear window antenna Radio/ hvac display Tan Underhood fuse block (right front of engine compt) Usb Navigation Wiring Diagram, with Surround Amplifier (3 of 4) for Cadillac CTS 2008 List of elements for Navigation Wiring Diagram, with Surround Amplifier (3 of 4) for Cadillac CTS 2008: 46 (at left rear shock tower) g402 Audio amplifier (rear of left strut tower) Audio mute sig Batt+ volt Body control module (bcm) Computer data lines system Cruise control system Drain wire Gmlan serial data Ground Inflatable restraint steering wheel module coil (below inflatable restraint steering wheel module) L audio sig (+) Left front door speaker Left steering wheel control switch Lf speaker out + Lf speaker out - Lo level audio sig Lo spd gmlan serial data Lr speaker out + Lr speaker out - Mute sig Navi audio sig Nca Noise compensation microphone (in overhead console) Phone sply volt Pnk R audio sig (+) Rear sub- woofer speaker Red Rf speaker out + Rf speaker out - Right front door speaker Right steering wheel control switch Rr speaker out + Rr speaker out - Seek down Seek up Speaker out + Speaker out - Spkr out+ Spkr out- Srce Tan Voice Vol + Vol - Navigation Wiring Diagram, with Surround Amplifier (4 of 4) for Cadillac CTS 2008 List of elements for Navigation Wiring Diagram, with Surround Amplifier (4 of 4) for Cadillac CTS 2008: 27 (at left rear shock tower) g402 Batt+ volt Coax Computer data lines system Drain wire Ground Hot at all times I/p center speaker Left audio sig Left rear speaker Left rear speaker (midrange) Left tweeter speaker Lo spd gmlan Nca Onstar fuse 10a Radio audio out Rdo/ spkr fuse 15a Rear fuse block (right rear of luggage compt) Red Right audio sig Right rear speaker Right rear speaker (midrange) Right tweeter speaker Tan Television antenna amplifier Television antenna module (w/ infotainment system) Television rear glass antenna Navigation Wiring Diagram, without Surround Amplifier (1 of 4) for Cadillac CTS 2008 List of elements for Navigation Wiring Diagram, without Surround Amplifier (1 of 4) for Cadillac CTS 2008: 52 Amp fuse 30a Anti-lock brakes system Audio common sig Audio mute sig Audio out Audio sig Auxiliary audio sig Batt+ volt Cellular telephone microphone (w/ onstar/ hands free) Coax Common Computer data lines system Detection sig Digital radio antenna (w/ digital audio system s-band) Drain Drain wire G402 (rear of left rear shock tower) Gmlan serial data Ground Hot at all times J240 J275 Left audio sig Lo level audio sig+ Lo level audio sig- Lo ref Lo ref/ground Micro/audio sig Navigation antenna Navigation antenna (in center of dash) Nca Pnk Radio Radio audio mute sig Rdo fuse 15a Rear fuse block (right rear of luggage compt) Red Remote enable sig Remote radio ctrl Right audio sig Serial data hi Serial data lo Sig Tan Usb Vehicle communication interface module (vcim) (w/ onstar) (at left rear of engine compt, near windshield) Vehicle spd sig Video display ctrl W/o hands free Wake-up sig X2 sig X215 Navigation Wiring Diagram, without Surround Amplifier (2 of 4) for Cadillac CTS 2008 List of elements for Navigation Wiring Diagram, without Surround Amplifier (2 of 4) for Cadillac CTS 2008: 42 (near inline connector x200) j250 (rear of left rear shock tower) g402 Anti-lock brakes system Audio screen Audio sig Auxiliary audio jack Batt+ Batt+ volt Coax Common sig Computer data lines system Ctrl sig Detection sig Display ctrl Drain wire Enable sig Enable sig remote a Exterior lights system G402 (rear of left rear shock tower) Ground Haz sw sig Hot at all times J200 J240 Logic Nav mtr fuse 10a Navigation & traffic data antenna (if equipped) (top center of windshield) Nca Pnk Radio antenna module (above headliner, near rear window) Radio rear window antenna Radio/ hvac display Radio/hvac control (if equipped) Red Serial data Tan Trac sw sig Underhood fuse block (right front of engine compt) Usb Wake-up sig Wash fluid Wiper/ washer system Navigation Wiring Diagram, without Surround Amplifier (3 of 4) for Cadillac CTS 2008 List of elements for Navigation Wiring Diagram, without Surround Amplifier (3 of 4) for Cadillac CTS 2008: 28 Audio amplifier (rear of left strut tower) Audio mute sig Batt+ volt G402 shock tower) (at left rear Ground I/p center speaker Left front door speaker Left rear speaker Left tweeter speaker Lf speaker out + Lf speaker out - Lo level audio sig Lr speaker out + Lr speaker out - Nca Red Remote enable sig Rf speaker out + Rf speaker out - Right front door speaker Right rear speaker Right tweeter speaker Rr speaker out + Rr speaker out - Speaker out + Speaker out - Subwoofer speaker Tan Navigation Wiring Diagram, without Surround Amplifier (4 of 4) for Cadillac CTS 2008 List of elements for Navigation Wiring Diagram, without Surround Amplifier (4 of 4) for Cadillac CTS 2008: 30 (at left rear shock tower) g402 Batt+ volt Body control module (bcm) Coax Computer data lines system Cruise control system Drain wire Ground Hot at all times Inflatable restraint steering wheel module coil (below inflatable restraint steering wheel module) L audio sig (+) Left audio sig Left steering wheel control switch Lo spd gmlan Nca Onstar fuse 10a R audio sig (+) Radio audio out Rear fuse block (right rear of luggage compt) Right audio sig Right steering wheel control switch Seek down Seek up Srce Television antenna amplifier Television antenna module (w/ infotainment system) Television rear glass antenna Voice Vol + Vol - Parking Assistant Wiring Diagram for Cadillac CTS 2008 List of elements for Parking Assistant Wiring Diagram for Cadillac CTS 2008: 32 Batt positive volt Center amber ind ctrl Computer data lines system Driver information center (dic) G402 (at left rear shock tower) Gmlan serial data Ground Hot at all times Instrument panel cluster (ipc) J440 (in rear bumper fascia harness, near branch to left rear corner object sensor) J445 (in rear bumper fascia harness, near branch to left rear middle object sensor) Left amber ind ctrl Left rear corner object alarm sensor (left side of rear fascia) Left rear middle object alarm sensor (left side of rear fascia) Lo spd gmlan serial data Logic Low ref Lr corner obj sens sig Lr middle obj sens sig Msm fuse 10a Obj sens sply volt Rear fuse block (right rear of luggage compt) Rear object sensor control module (under right side of rear shelf) Rear parking assist (rpa) display Red Red ind Red ind ctrl Right rear corner object alarm sensor (right side of rear fascia) Right rear middle object alarm sensor (right side of rear fascia) Rr corner obj sens sig Rr middle obj sens sig Telltale assembly sply
POWER DISTRIBUTION Power Distribution Wiring Diagram (1 of 6) for Cadillac CTS 2008 List of elements for Power Distribution Wiring Diagram (1 of 6) for Cadillac CTS 2008: 55 (right front of engine compt) underhood fuse block (right rear of luggage compt) rear fuse block 200a Air bag fuse 10a Amp fuse 30a Audio amplifier Aux/ outlet fuse 20a Battery Bcm 1 fuse 10a Bcm 2 fuse 15a Bcm 3 fuse 10a Bcm 4 fuse 10a Bcm 5 fuse 10a Bcm 6 fuse 15a Bcm 7 fuse 10a Body control module (bcm) Center console 1 accessory power outlet Center console 2 accessory power outlet Cnstr/ vent fuse 10a Ecm fuse 15a Engine control module (ecm) Evaporative emission (evap) canister vent solenoid valve From a ecm fuse (diagram 1 of 6) G201 (behind right kick panel) Generator Inflatable restraint front passenger presence system (pps) sensor Inflatable restraint sensing & diagnostic module (sdm) Infotainment system 007/008 Inline fuse generator J308 Memory seat module (msm) (if equipped) Msm fuse 10a Nca Onstar fuse 10a Premium audio branded w/ surround amplifier speaker system Rdo/ spkr fuse 15a Rear object sensor control module Rear subwoofer speaker Rear/ windw fuse 15a Red Remote control door lock receiver (rcdlr) Right rear window switch Rke/ pass-key/ mdl fuse 10a Rvc/ snsr fuse 10a Starter motor Television antenna module Tire pressure module To aux/ outlet fuse (diagram 1 of 6) To blwr fuse (diagram 3 of 6) To rear fuse block dr/lck fuse (diagram 3 of 6) To rear fuse block pwr/clmn circuit breaker (diagram 2 of 6) Vehicle communication interface module (vcim) (w/ onstar) W/ parking assist W/ remote start W/o remote start Power Distribution Wiring Diagram (2 of 6) for Cadillac CTS 2008 List of elements for Power Distribution Wiring Diagram (2 of 6) for Cadillac CTS 2008: 39 (in i/p harness, near branch for radio/hvac control) j275 (not used) (right rear of luggage compt) rear fuse block (w/ memory) Driver seat adjuster switch From battery (diagram 1 of 6) From trunk/ c relse fuse (diagram 2 of 6) Front passenger door module (fpdm) Garage door opener (gdo) (if equipped) J303 (in body harness, near inline connector x800) Left rear window switch Lf/frt/ pwr/seat circuit breaker 25a Lt/rear/ wndw fuse 15a Memory seat module (msm) Nca Near passenger seat adjuster switch) j385 Passenger seat adjuster switch Passenger seat lumbar adjuster switch Pdm fuse 15a Pwr/clmn circuit breaker 25a Radio Radio/ hvac control Radio/ hvac display Rdo fuse 15a Rear fuse block (right rear of luggage compt) Red Rt/frt/ pwr/seat circuit breaker 25a Spare fuse 25a Theft/ugdo fuse 10a To rdo fuse (diagram 2 of 6) Trunk/ relse fuse 15a Trunk/ relse relay W/ 8 way adjuster passenger seat power W/ memory W/ power lumbar control seat W/o memory W/o power lumbar control seat Wiring provisions X125 Power Distribution Wiring Diagram (3 of 6) for Cadillac CTS 2008 List of elements for Power Distribution Wiring Diagram (3 of 6) for Cadillac CTS 2008: 49 (in engine harness, near branch for brake booster pump relay) j184 (right front of engine compt) underhood fuse block (right rear of luggage compt) rear fuse block 3.6l (vin v) Abs fuse 30a Abs mtr fuse 50a Afs fuse 15a Blower motor control module Blwr fuse 40a Brake booster pump relay Brk vac pump fuse 20a Cigar lighter Dr/lck fuse 15a Driver door module (ddm) Driver window motor Electronic brake control module (ebcm) From battery (diagram 1 of 6) From bcm 7 fuse (diagram 1 of 6) Fuel/ pump fuse 20a Fuel/ pump relay G200 (behind left kick panel) Harness, near inline connector x202) j270 Headlamp module (if equipped) If equipped J200 J377 (in sunroof assembly harness, near sunroof control module) Lck relay Lt/pos/lp relay Ltr fuse 20a Passenger window motor Ped prot fuse 10a Pedestrian impact detection module (if equipped) Pwr moding fuse 2a Pwr/wndw circuit breaker 25a Red Rt/pos/lp fuse 10a Rt/pos/lp relay S/roof fuse 30a Spare relay Sunroof control module Sunroof shade module Theft deterrent module (tdm) To ignition switch (diagram 5 of 6) To nav mtr fuse (diagram 4 of 6) Unlck relay W/ remote start W/o remote start Windshield washer solvent heater (if equipped) Wsw/htr fuse 60a Power Distribution Wiring Diagram (4 of 6) for Cadillac CTS 2008 List of elements for Power Distribution Wiring Diagram (4 of 6) for Cadillac CTS 2008: 67 (in driver seat assembly harness, near inline connector x300) j388 (not used) (right front of engine compt) underhood fuse block A/c cltch fuse 10a A/c cmprsr cltch relay After boil relay Automatic transmission (6 speed a/t) Automatic transmission (if equipped) Awd fuse 15a Data link connector (dlc) Disply fuse 10a Driver back heated seat element Driver cushion heated seat element Drl relay (w/o hid) lo beam lp relay (w/ hid) Drl/eng pump fuse 10a Ecm/tcm ign fuse 15a Engine control module (ecm) Fan 1 fuse 30a Fan 1 relay Fan 2 fuse 30a Fan 2 relay Fog lamp relay From a/c h cltch fuse (diagram 4 of 6) From bcm (pin 19 connector x4) (diagram 5 of 6) From bcm (pin 21 connector x4) (diagram 5 of 6) From f pwr moding fuse (diagram 3 of 6) From g wpr fuse (diagram 4 of 6) Hdm wash fuse 20a Headlamp wash relay Hi beam relay Horn fuse 15a Horn relay Hvac control module Ign main relay Instrument panel cluster (ipc) J389 Lo beam relay (w/o hid) lt drl relay (w/ hid) Mass air flow (maf) sensor/ intake air temperature (iat) sensor Misc ign fuse 10a Nav mtr fuse 10a Passenger back heated seat element Passenger cushion heated seat element Pnk Pnk c Radio/ hvac display Rear defog fuse 50a Rear defog relay Rt drl (hid) relay Strtr fuse 40a Strtr relay Tcm batt fuse 15a Tire pressure module (if equipped) To air bag fuse (diagram 6 of 6) To hdm wash fuse (diagram 4 of 6) To horn fuse (diagram 4 of 6) To pwr/trn relay (diagram 6 of 6) Transfer case shift control module W/ awd auto provisions W/ climate control seats W/ hid Wiring provisions Wpr fuse 30a Wpr hi relay Wpr relay Wsw pump fuse 10a Wsw pump relay X215 Power Distribution Wiring Diagram (5 of 6) for Cadillac CTS 2008 List of elements for Power Distribution Wiring Diagram (5 of 6) for Cadillac CTS 2008: 44 (in engine harness, near branch for underhood fuse block) j187 (in i/p harness, near branch for front center speaker) j265 (right front of engine compt) underhood fuse block 3.6l (vin 7) a/t 3.6l (vin v) m/t 5v ref A/c cmprsr cltch relay Acc Acc volt After blow relay Batt pos Body control module (bcm) Crank volt Electronic compass module Emis 2 fuse 15a Fan 1 relay Fan 2 relay Fan s/p relay From o emis 1 fuse (diagram 6 of 6) From pwr moding fuse (diagram 3 of 6) Heated oxygen sensor (ho2s) bank 1 sensor 2 Heated oxygen sensor (ho2s) bank 2 sensor 2 Hvac control module Ign 1 volt Ign 3 volt Ignition switch Off Off acc Pnk Rap fuse volt Remote control door lock receiver (rcdlr) Run Serial data Start Sunroof control module (if equipped) Sunroof shade module (if equipped) Theft deterrent module (tdm) To underhood fuse block (ign main relay) (diagram 4 of 6) To underhood fuse block (pin 20 connector x2) (diagram 4 of 6) Vehicle speed sensor (vss) (m/t) W/ remote start W/o remote start Windshield outside moisture sensor (if equipped) Windshield washer solvent heater (if equipped) Power Distribution Wiring Diagram (6 of 6) for Cadillac CTS 2008 List of elements for Power Distribution Wiring Diagram (6 of 6) for Cadillac CTS 2008: 33 (in engine harness, near branch for underhood fuse block) j185 (in engine harness, near connector of coil 1) j145 (in engine harness, near connector x5 of underhood fuse block) j161 (in engine harness, near connector x5 of underhood fuse block) j162 (in engine harness, near ect sensor connector) j146 (right front of engine compt) underhood fuse block 3.6l (vin 7) 3.6l (vin v) Air bag ign fuse 10a Camshaft position (cmp) actuator solenoid valve (exhaust bank 1) Camshaft position (cmp) actuator solenoid valve (exhaust bank 2) Camshaft position (cmp) actuator solenoid valve (intake bank 1) Camshaft position (cmp) actuator solenoid valve (intake bank 2) Ecm fuse 10a Emis 1 fuse 15a Engine control module (ecm) Evaporative emission (evap) canister purge solenoid valve Even coils fuse 15a From ign main relay (diagram 4 of 6) i From misc m ign fuse (diagram 4 of 6) From odd n coils fuse (diagram 6 of 6) Fuel injector Heated oxygen sensor (ho2s) bank 1 sensor 1 Heated oxygen sensor (ho2s) bank 2 sensor 1 Ignition coil/ module Inflatable restraint sensing & diagnostic module (sdm) Instrument panel cluster (ipc) Intake manifold tuning (imt) solenoid valve 3.6l (vin 7) Odd coils fuse 15a Pnk Pwr/trn relay To emis 2 fuse (diagram 5 of 6) To even coils fuse (diagram 6 of 6)
POWER DOOR LOCKS Power Door Locks Wiring Diagram (1 of 2) for Cadillac CTS 2008 List of elements for Power Door Locks Wiring Diagram (1 of 2) for Cadillac CTS 2008: 64 (in driver door handle switch) 12-v ref Antenna clock Antenna data Antenna low Antenna sig Antenna sply Body control module (bcm) Center console active keyless entry antenna (w/ remote start) Center console passive keyless entry antenna (under floor console) Computer data lines system Data bus+ Display fuse 10a Driver information center (dic) Drv door unlck Drv sw sig Exterior lights system G102 (right front of engine compt) G200 (behind left kick panel) G201 (behind right kick panel) G401 (at right rear shock tower) Gnd Hood ajar sw Hood ajar switch Hood sw sig Horn rly ctrl Horns system Hot at all times Ignition sw sig Instrument panel cluster (ipc) J201 J390 (in body harness, near inline connector x700) J394 (in body harness, near branch to inflatable restraint sensing & diagnostic module) J396 (in body harness, near branch to inflatable restraint sensing & diagnostic module) J430 J710 J810 Left front door handle keyless entry antenna (w/ remote start) Left rear door latch (at rear of left rear door) Liftgate ajar sw Logic Lr door ajar sw Lr door open sw Nca Park lp sply Pass sw sig Pnk Rear compartment keyless entry antenna Rear compartment lid latch Release ctrl Remote control door lock receiver (rcdlr) Right front door handle keyless entry antenna (w/ remote start) (in passenger door handle switch) Right rear door latch (at rear of right rear door) Rke/pass key/mdl fuse 10a Rr door ajar sw Security ind Serial data Shift interlock system Shift pos sig Starting/ charging system Tan Trunk, tailgate, fuel doors system Trunk/tailgate, fuel doors system Underhood fuse block (right front of engine compt) Power Door Locks Wiring Diagram (2 of 2) for Cadillac CTS 2008 List of elements for Power Door Locks Wiring Diagram (2 of 2) for Cadillac CTS 2008: 48 (at rear of driver door) driver door latch (at right rear shock tower) g401 (behind right kick panel) g201 (w/ deluxe interior lamp package) j605 87a Backlight lp Computer data lines system Courtesy lp hi Courtesy lp lo Door latch Door lck Dr/lck fuse 15a Driver door handle switch Driver door module (ddm) (on left front door, under door trim panel) Drv door latch Drv door lck Drv door sw Front passenger door module (fpdm) (on right front door, under door trim panel) G200 (behind left kick panel) G201 (behind right kick panel) Gnd Hot at all times Ic 2 ctrl Interior lights system J505 (w/ deluxe interior lamp package) J510 J610 Lck relay Lf door ajar Lf door handle Lf dr sw sig Logic Network 1 Network 2 Passenger door handle switch Passenger door latch (at rear of passenger door) Pdm fuse 15a Pnk Rear fuse block (right rear of luggage compt) Release sig Rf door handle Rf dr sw sig Serial data Tan Trunk, tailgate, fuel doors system Unlck relay W/ remote start W/o remote start
POWER MIRRORS Automatic Day/Night Mirror Wiring Diagram for Cadillac CTS 2008 List of elements for Automatic Day/Night Mirror Wiring Diagram for Cadillac CTS 2008: 38 (at right rear shock tower) g401 (in body harness, near branch for g102) j379 Acc volt Backup lp sply volt Batt positive volt Body control module (bcm) Computer data lines system Data bus+ Data bus- Electrochromic Emergency ind Emergency switch Exterior lights system G402 (at left rear shock tower) Gnd Ground Hot at all times Ign Inside rearview mirror J378 Keypad green led ind Keypad green led sig Keypad red led ind Keypad red led sig Keypad sig Keypad sply volt Logic Max Min Off Onstar fuse 10a Onstar ind Onstar switch Phone ind Phone switch Rear fuse block (right rear of luggage compt) Tan Vehicle communication interface module (vcim) (in rear compt, behind right strut tower) Power Mirrors Wiring Diagram for Cadillac CTS 2008 List of elements for Power Mirrors Wiring Diagram for Cadillac CTS 2008: 21 (behind left kick panel) g200 (behind right kick panel) g201 Computer data lines system Dr/lck fuse 15a Driver door module (ddm) (on left front door, under door trim panel) Driver outside rearview mirror Folding Front passenger door module (fpdm) (on right front door, under door trim panel) Hot at all times J510 J610 Left Logic Nca Passenger outside rearview mirror Pdm fuse 15a Rear fuse block (right rear of luggage compt) Right Sel left Sel right W/ power folding mirror
POWER SEATS Driver Seat Wiring Diagram for Cadillac CTS 2008 List of elements for Driver Seat Wiring Diagram for Cadillac CTS 2008: 14 Driver seat adjuster switch Driver seat front vertical motor (under driver seat) Driver seat horizontal motor (under driver seat) Driver seat rear vertical motor (under driver seat) Driver seat recline motor (under driver seat) Front vertical G200 (behind left kick panel) Horizontal Hot at all times Lf/frt/ pwr/seat circuit breaker 25a Rear fuse block (right rear of luggage compt) Rear vertical Recline Tan Passenger Seat Wiring Diagram for Cadillac CTS 2008 List of elements for Passenger Seat Wiring Diagram for Cadillac CTS 2008: 16 Front vertical G201 (behind right kick panel) Horizontal Hot at all times J374 J385 (w/ power lumbar seat) Passenger seat adjuster switch Passenger seat front vertical motor (under passenger seat) Passenger seat horizontal motor (under passenger seat) Passenger seat rear vertical motor (under passenger seat) Passenger seat recline motor (under passenger seat) Rear fuse block (right rear of luggage compt) Rear vertical Recline Rt/frt/ pwr/seat circuit breaker 25a Tan Passenger"s Lumbar Wiring Diagram for Cadillac CTS 2008 List of elements for Passenger"s Lumbar Wiring Diagram for Cadillac CTS 2008: 10 Backward Forward G201 (behind right kick panel) Hot at all times J374 J385 Passenger seat lumbar adjuster switch Passenger seat lumbar horizontal motor (in passenger seat back) Rear fuse block (right rear of luggage compt) Rt/frt/ pwr/seat circuit breaker 25a
POWER TOP/SUNROOF Power Top/Sunroof Wiring Diagram for Cadillac CTS 2008 List of elements for Power Top/Sunroof Wiring Diagram for Cadillac CTS 2008: 32 (at right rear shock tower) g401 (not used) Batt pos vol Body control module (bcm) Computer data lines system G401 (at right rear shock tower) Ground Hot at all times I/p dimmer switch sig Interior lights system J368 (in body harness, near branch to inflatable restraint sensing & diagnostic module) J373 J377 J397 (in fuel tank harness, near inline connector x420) J732 Logic Power distribution system Rap vol Rear fuse block (right rear of luggage compt) S/roof fuse 30a Serial data Serial data bus + Serial data bus - Sunroof module (behind headliner, rear of sunroof assembly) Sunroof shade module Sunroof shade switch Sunroof sw-data 1 Sunroof sw-data 3 Sunroof sw-data 4 Sunroof sw-data 6 Sunroof switch Tan
POWER WINDOWS Power Windows Wiring Diagram for Cadillac CTS 2008 List of elements for Power Windows Wiring Diagram for Cadillac CTS 2008: 41 Batt pos volt Batt positive volt Body control module (bcm) Computer data lines system Driver door module (ddm) (on left front door, under door trim panel) Driver window motor (center of driver's door) Front passenger door module (fpdm) (on right front door, under door trim panel) G200 (behind left kick panel) G201 (behind right kick panel) Gnd Hot at all times I/p dimmer sw sig Interior lights system J510 J610 J715 J805 Left rear window motor (center of left rear door) Left rear window switch Lkout ctrl Lkout rr sig Lkout sig Local interconnect network 1 Local interconnect network 2 Logic Lr dn ctrl Lr dn sig Lr up ctrl Lr up sig Lt/rear/ wndw fuse 15a Passenger window motor (center of passenger's door) Pwr/wndw circuit breaker 25a Rear fuse block (right rear of luggage compt) Rear/ wndw fuse 15a Right rear window motor (center of right rear door) Right rear window switch Rr dn ctrl Rr dn sig Rr up ctrl Rr up sig Serial data
RADIO Radio Wiring Diagram, with Surround Amplifier (1 of 4) for Cadillac CTS 2008 List of elements for Radio Wiring Diagram, with Surround Amplifier (1 of 4) for Cadillac CTS 2008: 47 (rear of left rear shock tower) g402 Anti-lock brakes system Audio common sig Audio mute sig Audio out Audio sig Auxiliary audio sig Batt+ volt Cellular telephone microphone (w/ onstar/ hands free) Coax Common sig Computer data lines system Detection sig Digital radio antenna (w/ digital audio system s-band) Drain Drain wire Gmlan serial data Ground Hot at all times J240 J275 Left audio sig Lo level audio - Lo level audio sig+ Lo level audio sig- Lo ref Lo ref/ground Microphone sig or audio sig Navi audio sig - Navigation antenna Navigation antenna (in center of dash) Nca Pnk Radio Rdo fuse 15a Rear fuse block (right rear of luggage compt) Red Remote enable sig Right audio sig Sig Tan Usb Vehicle communication interface module (vcim) (w/ onstar) (at left rear of engine compt, near windshield) Vehicle spd sig Video display ctrl W/o hands free X215 Radio Wiring Diagram, with Surround Amplifier (2 of 4) for Cadillac CTS 2008 List of elements for Radio Wiring Diagram, with Surround Amplifier (2 of 4) for Cadillac CTS 2008: 28 Audio screen Audio sig Auxiliary audio jack Batt+ Batt+ volt Coax Common sig Detection sig Display ctrl Enable sig Enable sig remote a G402 (rear of left rear shock tower) Ground Hot at all times J200 J240 J250 (near inline connector x200) Kick panel) g200 Nav mtr fuse 10a Navigation & traffic data antenna (if equipped) (top center of windshield) Nca Pnk Radio antenna module (above headliner, near rear window) Radio rear window antenna Radio/ hvac display Tan Underhood fuse block (right front of engine compt) Usb Radio Wiring Diagram, with Surround Amplifier (3 of 4) for Cadillac CTS 2008 List of elements for Radio Wiring Diagram, with Surround Amplifier (3 of 4) for Cadillac CTS 2008: 46 (at left rear shock tower) g402 Audio amplifier (rear of left strut tower) Audio mute sig Batt+ volt Body control module (bcm) Computer data lines system Cruise control system Drain wire Gmlan serial data Ground Inflatable restraint steering wheel module coil (below inflatable restraint steering wheel module) L audio sig (+) Left front door speaker Left steering wheel control switch Lf speaker out + Lf speaker out - Lo level audio sig Lo spd gmlan serial data Lr speaker out + Lr speaker out - Mute sig Navi audio sig Nca Noise compensation microphone (in overhead console) Phone sply volt Pnk R audio sig (+) Rear sub- woofer speaker Red Rf speaker out + Rf speaker out - Right front door speaker Right steering wheel control switch Rr speaker out + Rr speaker out - Seek down Seek up Speaker out + Speaker out - Spkr out+ Spkr out- Srce Tan Voice Vol + Vol - Radio Wiring Diagram, with Surround Amplifier (4 of 4) for Cadillac CTS 2008 List of elements for Radio Wiring Diagram, with Surround Amplifier (4 of 4) for Cadillac CTS 2008: 27 (at left rear shock tower) g402 Batt+ volt Coax Computer data lines system Drain wire Ground Hot at all times I/p center speaker Left audio sig Left rear speaker Left rear speaker (midrange) Left tweeter speaker Lo spd gmlan Nca Onstar fuse 10a Radio audio out Rdo/ spkr fuse 15a Rear fuse block (right rear of luggage compt) Red Right audio sig Right rear speaker Right rear speaker (midrange) Right tweeter speaker Tan Television antenna amplifier Television antenna module (w/ infotainment system) Television rear glass antenna Radio Wiring Diagram, without Surround Amplifier (1 of 4) for Cadillac CTS 2008 List of elements for Radio Wiring Diagram, without Surround Amplifier (1 of 4) for Cadillac CTS 2008: 52 Amp fuse 30a Anti-lock brakes system Audio common sig Audio mute sig Audio out Audio sig Auxiliary audio sig Batt+ volt Cellular telephone microphone (w/ onstar/ hands free) Coax Common Computer data lines system Detection sig Digital radio antenna (w/ digital audio system s-band) Drain Drain wire G402 (rear of left rear shock tower) Gmlan serial data Ground Hot at all times J240 J275 Left audio sig Lo level audio sig+ Lo level audio sig- Lo ref Lo ref/ground Micro/audio sig Navigation antenna Navigation antenna (in center of dash) Nca Pnk Radio Radio audio mute sig Rdo fuse 15a Rear fuse block (right rear of luggage compt) Red Remote enable sig Remote radio ctrl Right audio sig Serial data hi Serial data lo Sig Tan Usb Vehicle communication interface module (vcim) (w/ onstar) (at left rear of engine compt, near windshield) Vehicle spd sig Video display ctrl W/o hands free Wake-up sig X2 sig X215 Radio Wiring Diagram, without Surround Amplifier (2 of 4) for Cadillac CTS 2008 List of elements for Radio Wiring Diagram, without Surround Amplifier (2 of 4) for Cadillac CTS 2008: 42 (near inline connector x200) j250 (rear of left rear shock tower) g402 Anti-lock brakes system Audio screen Audio sig Auxiliary audio jack Batt+ Batt+ volt Coax Common sig Computer data lines system Ctrl sig Detection sig Display ctrl Drain wire Enable sig Enable sig remote a Exterior lights system G402 (rear of left rear shock tower) Ground Haz sw sig Hot at all times J200 J240 Logic Nav mtr fuse 10a Navigation & traffic data antenna (if equipped) (top center of windshield) Nca Pnk Radio antenna module (above headliner, near rear window) Radio rear window antenna Radio/ hvac display Radio/hvac control (if equipped) Red Serial data Tan Trac sw sig Underhood fuse block (right front of engine compt) Usb Wake-up sig Wash fluid Wiper/ washer system Radio Wiring Diagram, without Surround Amplifier (3 of 4) for Cadillac CTS 2008 List of elements for Radio Wiring Diagram, without Surround Amplifier (3 of 4) for Cadillac CTS 2008: 28 Audio amplifier (rear of left strut tower) Audio mute sig Batt+ volt G402 shock tower) (at left rear Ground I/p center speaker Left front door speaker Left rear speaker Left tweeter speaker Lf speaker out + Lf speaker out - Lo level audio sig Lr speaker out + Lr speaker out - Nca Red Remote enable sig Rf speaker out + Rf speaker out - Right front door speaker Right rear speaker Right tweeter speaker Rr speaker out + Rr speaker out - Speaker out + Speaker out - Subwoofer speaker Tan Radio Wiring Diagram, without Surround Amplifier (4 of 4) for Cadillac CTS 2008 List of elements for Radio Wiring Diagram, without Surround Amplifier (4 of 4) for Cadillac CTS 2008: 30 (at left rear shock tower) g402 Batt+ volt Body control module (bcm) Coax Computer data lines system Cruise control system Drain wire Ground Hot at all times Inflatable restraint steering wheel module coil (below inflatable restraint steering wheel module) L audio sig (+) Left audio sig Left steering wheel control switch Lo spd gmlan Nca Onstar fuse 10a R audio sig (+) Radio audio out Rear fuse block (right rear of luggage compt) Right audio sig Right steering wheel control switch Seek down Seek up Srce Television antenna amplifier Television antenna module (w/ infotainment system) Television rear glass antenna Voice Vol + Vol -
SHIFT INTERLOCK Ignition Lock Solenoid Wiring Diagram for Cadillac CTS 2008 List of elements for Ignition Lock Solenoid Wiring Diagram for Cadillac CTS 2008: 15 A/t Bcm 1 fuse 10a Body control module (bcm) G200 (behind left kick panel) Hot at all times Ignition lock cylinder control actuator (on steering column) Ignition lock cylinder control switch (part of a/t shift control assembly) J208 J376 M/t Remote control door lock receiver (rcdlr) Shift position signal Underhood fuse block (right front of engine compt) W/ remote start W/o remote start Shift Interlock Wiring Diagram for Cadillac CTS 2008 List of elements for Shift Interlock Wiring Diagram for Cadillac CTS 2008: 23 5-volt ref 1 A/t internal mode (ims) switch Automatic transmission Automatic transmission shift lock control solenoid (part of a/t shift control assembly) Battery pos volt Bcm 1 fuse 10a Body control module (bcm) Brake pedal position sensor (near top of brake pedal) Computer data lines system Control solenoid valve assembly Engine control module (ecm) (3.6l: on front right valve cover) G200 (behind left kick panel) Hi spd gmlan + Hot at all times J208 Low ref Nca P/n Park/neutral Shift lock ctrl sol Stop lamp sw sig Tan Underhood fuse block (right front of engine compt)
STARTING/CHARGING Charging Wiring Diagram for Cadillac CTS 2008 List of elements for Charging Wiring Diagram for Cadillac CTS 2008: 31 (not used) 200a Battery Battery current sensor (right rear of luggage compt) Body control module (bcm) Charge ind Computer data lines system Current sens low ref Current sens sig Current sens sply volt Driver information center (dic) Engine control module (ecm) (3.6l (vin 7): on front right valve cover) G201 (behind right kick panel) G405 (right side of luggage compt) Gen duty cycle sig Gen turn on sig Generator Inline fuse generator Instrument panel cluster (ipc) Logic Low speed gmlan serial data Pnk Power distribution system Rear fuse block (right rear of luggage compt) Red Rvc/snsr fuse 10a Serial data bus+ Serial data bus- Starting circuit Tan Underhood fuse block (right front of engine compt) Starting Wiring Diagram for Cadillac CTS 2008 List of elements for Starting Wiring Diagram for Cadillac CTS 2008: 26 5v ref Acc Automatic transmission Battery Body control module (bcm) Computer data lines system Crank volt Engine control module (ecm) (3.6l (vin 7): on front right valve cover) G104 (on right body rail, near right headlight) G132 (top right of engine) G405 (right side of luggage compt) Ign lk cyl ctrl actr sig Ignition switch Off Power distribution system Red Run Serial data bus+ Serial data bus- Start Starter motor Starter relay coil ctrl Strtr fuse 40a Strtr relay Tan Underhood fuse block (right front of engine compartment)
SUPPLEMENTAL RESTRAINTS Supplemental Restraints Wiring Diagram (1 of 2) for Cadillac CTS 2008 List of elements for Supplemental Restraints Wiring Diagram (1 of 2) for Cadillac CTS 2008: 43 (on steering wheel) inflatable restraint steering wheel module (under driver's seat) g306 Air bag ign fuse 10a Batt positive voltage Case ground Computer data lines system Driver seat belt switch (part of seat belt assembly) Ground High control Hot w/ ign main relay energized Ignition 1 voltage Inflatable restraint sensing & diagnostic module (sdm) (under center console) Inflatable restraint side impact sensor) Inflatable restraint steering wheel module coil (below inflatable restraint steering wheel module) J380 (near breakaway to right front pnk L seat pos sw sig Left front inflatable restraint side impact sensor (near base of left "b" pillar) Left inflatable restraint front end sensor Left rear inflatable restraint side impact sensor (in left rear door) Lf seat belt sw sig Low control Low reference Low spd gmlan serial data Passenger seat belt switch (part of seat belt assembly) Pin shorting bars engaged Pnk R seat pos sw sig R sensor sig Red Rf seat belt sw sig Right front inflatable restraint side impact sensor (near base of right "b" pillar) Right inflatable restraint front end sensor Right rear inflatable restraint side impact sensor (in right rear door) Sens sig Sensor low reference Sensor sig Sensor signal Sensor voltage Shorting bar Shorting bars Tan Underhood fuse block (right front of engine compt) When module connector is disconnected from harness: (shorting bars are connected between following pins: 4-5, 6-7, 8-9, 10-11, 12-13, 14-15, 16-17, 18-19, 24-25 & 26-27) Supplemental Restraints Wiring Diagram (2 of 2) for Cadillac CTS 2008 List of elements for Supplemental Restraints Wiring Diagram (2 of 2) for Cadillac CTS 2008: 30 Air bag fuse 10a Air bag ind Computer data lines system Driver inflatable restraint roof rail module (in left side roof rail) Driver inflatable restraint seat position sensor Driver infor- mation center (dic) Driver seat belt pretensioner (part of seat belt assembly) G201 (behind right kick panel) Hot at all times Ign Inflatable restraint front passenger presence system (pps) sensor Inflatable restraint i/p module (under passenger side upper dash pad) Instrument panel cluster (ipc) Left inflatable restraint side impact module (on left side of left front seat) Logic Nca b+ Nca ground Nca serial data Off ind On ind Passenger air bag ind Passenger inflatable restraint roof rail module (in right side roof rail) Passenger inflatable restraint seat position sensor Passenger seat belt pretensioner (part of seat belt assembly) Pnk Radio/ hvac control Rear fuse block (right rear of luggage compt) Right inflatable restraint side impact module (on right side of right front seat) Serial data Shorting bar
TRANSMISSION A/T Wiring Diagram for Cadillac CTS 2008 List of elements for A/T Wiring Diagram for Cadillac CTS 2008: 81 Acc Automatic transmission Automatic transmission fluid pressure (ftp) sensor Automatic transmission internal mode switch (ims) Automatic transmission manual shift switch Automatic transmission shift lever Batt+ Body control module (bcm) Cluster (ipc) Computer data lines Control solenoid valve assembly Cruise control system Data bus (+) Data bus (-) Driver information center (dic) Ecm/ tcm ign fuse 15a Engine control module (ecm) G132 (top right of engine) Gmlan Gmlan serial data bus+ Gmlan serial data bus- Gnd Hot at all times Hot w/ ign main relay energized Ign Ign 2 Ign lock sig Ign vol Ignition switch Input speed sensor (iss) Instrument panel Iss low Iss/oss high J127 J260 (w/o remote start) J285 (in steering column harness, near branch for body control module) Logic Low ref Off Oss low Output speed sensor (oss) Pc 1 solenoid Pc 2 solenoid Pc 3 solenoid Pc 4 solenoid Pc 5 solenoid Pnk Pressure control (pc) solenoid valve 1 Pressure control (pc) solenoid valve 2 Pressure control (pc) solenoid valve 3 Pressure control (pc) solenoid valve 4 Pressure control (pc) solenoid valve 5 Red Remote radio ctrl sply vol Run Shift solenoid (ss) valve 1 Shift solenoid (ss) valve 2 Ss 1 Ss 2 Start Stop lamp sw Stop lamp sw sig System Tan Tap up/tap down sw sig Tcc solenoid Tcm batt fuse 15a Tfp 1 Tfp 3 Tfp 4 Tfp 5 Tft Torque converter clutch (tcc) solenoid valve Transmission control module (tcm) Transmission fluid temperature (tft) sensor Trns range sig a Trns range sig b Trns range sig c Trns range sig p Underhood fuse block (right front of engine compt) Wakeup serial AWD Wiring Diagram for Cadillac CTS 2008 List of elements for AWD Wiring Diagram for Cadillac CTS 2008: 31 Awd fuse 15a Batt + Body control module (bcm) Clutch coil ctrl Clutch coil rtn Computer data lines system Driver information center (dic) Ecm/ tcm ign fuse 15a G200 (behind left kick panel) Gmlan Ground Hot at all times Hot w/ ign main relay energized Ign Instrument panel cluster (ipc) J200 Logic Oil temp 5v ref Oil temp sens sig Pnk Resistor 5v ref Resistor sig Serial data bus+ Serial data bus- Tan Transfer case clutch coil Transfer case fluid temperature sensor Transfer case shift control module Underhood fuse block (right front of engine compt) Wakeup serial Wakeup serial data
TRUNK, TAILGATE, FUEL DOOR Trunk Release Wiring Diagram for Cadillac CTS 2008 List of elements for Trunk Release Wiring Diagram for Cadillac CTS 2008: 24 (at right rear shock tower) g401 Ajar sw sig Body control module (bcm) Computer data lines system Driver door module (ddm) (on left front door, under door trim panel) Drv dr unlock rly ctrl x7 Exterior rear compartment lid release switch (w/ remote start) G401 (at right rear shock tower) H ign sw sig Hot at all times Interior rear compartment lid release switch J430 L serl data Low gmlan serl data x7 P trnk rel ctrl x1 Pnk Rear compartment lid latch Rear fuse block (right rear of luggage compt) Remote control door lock receiver (rcdlr) Rke/pass key/mdl fuse 10a Tan Trunk/ relse fuse 15a Trunk/ relse relay Underhood fuse block (right front of engine compt)
WARNING SYSTEMS Chime Wiring Diagram for Cadillac CTS 2008 List of elements for Chime Wiring Diagram for Cadillac CTS 2008: 59 (behind right kick panel) g201 (in body harness, near breakaway to right front inflatable restraint side impact sensor) j380 pnk Audio amplifier (premium) (rear of left strut tower) Auto Batt positive volt Bcm 3 fuse 10a Bcm 4 fuse 10a Body control module (bcm) Brake fluid level switch (on brake fluid reservoir) Brake ind Class 2 serial data Computer data lines system Door ajar signal Door open signal Driver door latch assembly (at rear of driver door) Driver door module (ddm) (on left front door, under door trim panel) Driver seat belt ind Driver seat belt switch (part of seat belt assembly) Driver sig Dvr dr ajar sw sig Dvr dr open sw sig Engine coolant temperature ind G102 (right front of engine compt) G200 (behind left kick panel) Gnd Ground Hdlmps off Hdlmps on Head Hot at all times Ignition switch Ind ctrl Inflatable restraint sensing & diagnostic module (sdm) (under center console) Instrument panel cluster (ipc) J205 J510 Key in ign sw sig Key in ignition switch Lo spd gmlan serial data Logic Low engine oil pressure ind Low ref Network 1 Off Park Park brake sw sig Park brake switch (on park brake assembly) Park ind Park lamp on sig Pnk Radio Remote control door lock receiver (rcdlr) Serial data bus+ Serial data bus- Tan Turn signal/ multifunction switch Underhood fuse block (right front of engine compt) W/ remote start W/o remote start Tire Pressure Monitoring Wiring Diagram for Cadillac CTS 2008 List of elements for Tire Pressure Monitoring Wiring Diagram for Cadillac CTS 2008: 30 (at right rear shock tower) g401 (in forward lamp harness, near left front tire pressure sensor) j189 (in rear bumper fascia harness, near branch to inline connector x430) j455 Center console passive keyless entry antenna (under floor console) Computer data lines system Ground Hot w/ ign main relay energized Ign 1 volt Instrument panel cluster (ipc) Keyless entry antenna lo ref Keyless entry/tire press antenna sig Left front tire pressure receiver (near left front wheel) (if equipped) Left rear tire pressure receiver (near left rear wheel) (if equipped) Lf receiver sig Lo ref Lo spd gmlan serial data Logic Low tire pressure indicator Lr receiver sig Misc ign fuse 10a Pnk Remote control door lock receiver (rcdlr) Rf receiver sig Right front tire pressure receiver (near right front wheel) (if equipped) Right rear tire pressure receiver (near right rear wheel) (if equipped) Rr receiver sig Sply volt Tan Tire pressure module (left side of luggage compt) Underhood fuse block (right front of engine compt)
WIPER/WASHER Front Wiper/Washer & Headlamp Washer Wiring Diagram for Cadillac CTS 2008 List of elements for Front Wiper/Washer & Headlamp Washer Wiring Diagram for Cadillac CTS 2008: 60 (at base of washer fluid reservoir) windshield washer fluid pump (in i/p harness, near branch for front center speaker) 87a Air conditioning system Battery Body control module (bcm) Driver information center (dic) Fog lamp relay ctrl Fr wiper sw high sig G102 (right front of engine compt) G104 (on right body rail, near right headlight) G110 (on right frame rail, near abs module) G200 (behind left kick panel) G401 (at right rear shock tower) G402 (at left rear shock tower) Ground Hdm wash fuse 20a Head lamp Headlamp relay ctrl Headlamp washer fluid pump (if equipped) (behind right front corner of bumper, in washer reservoir) Hot at all times I/p fuse block Ignition 3 voltage Instrument panel cluster (ipc) J255 (w/ heated nozzles) (in steering column harness, near branch for body control module) J265 J378 Logic Low ind ctrl Pnk Power tops system Radio/hvac control Red Sen sig 1 Sen sig 2 Tan Underhood fuse block (right front of engine compt) Voltage Wash relay Washer ctrl sw sig Washer ctrl sw suppy Washer fluid heated control switch Windshield outside moisture sensor (if equipped) Windshield relay ctrl Windshield sen sig 1 Windshield sen sig 2 Windshield sw high Windshield sw sig Windshield sw sig 2 Windshield washer fluid level switch (at base of washer fluid reservoir) Windshield washer solvent heater (if equipped) Windshield wiper motor Windshield wiper sw Windshield wiper/washer switch Wpr fuse 30a Wpr hi relay Wpr relay Wsw pump fuse 10a Wsw pump relay Wsw/htr fuse 60a
